fix: render error on input

fix: make led focus the tab
feat: remember panel per dsp
2026-09-30 21:14:08 +02:00 · 2026-09-30 16:55:47 +02:00 · 2026-09-30 16:53:44 +02:00 · 2026-09-30 16:35:15 +02:00 · 2026-09-30 16:08:42 +02:00 · 2026-09-30 12:42:14 +02:00
141 changed files with 11216 additions and 7840 deletions
@@ -8,3 +8,10 @@ This template should help get you started developing with Tauri, React and Types

 # TODO
 - Move meters polling logic outside dsp state because it causes re-render of everything tied to dsp constantly
+- Check render to improve perfoormances
+- Check in meter if clip bool is limit instead
+- On close disconenct all ds^p
+- Ma-trix gain block sometimes
+- Q out of range
+
+- Check end to end behavioour
@@ -1097,9 +1097,6 @@
        "arm"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1114,9 +1111,6 @@
        "arm"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
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      "os": [
@@ -1131,9 +1125,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1148,9 +1139,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1165,9 +1153,6 @@
        "loong64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1182,9 +1167,6 @@
        "loong64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1199,9 +1181,6 @@
        "ppc64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1216,9 +1195,6 @@
        "ppc64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1233,9 +1209,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1250,9 +1223,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1267,9 +1237,6 @@
        "s390x"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1284,9 +1251,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1301,9 +1265,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1493,9 +1454,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1513,9 +1471,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1533,9 +1488,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1553,9 +1505,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1573,9 +1522,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1809,9 +1755,9 @@
      }
    },
    "node_modules/baseline-browser-mapping": {
-      "version": "2.10.44",
-      "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.10.44.tgz",
-      "integrity": "sha512-T3ghW+sl/ZJ8w1v/yQx3qvJ9040DWoLBz8JT/CILbAKcFyG9b2MRe75v6W5uXjv6uH1lumK2Kv46y2zSkcej0Q==",
+      "version": "2.11.21",
+      "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.11.21.tgz",
+      "integrity": "sha512-uh8vpY/1/YyFkunIDFH/12p7/7VdPKA1hejMVEbdkEaWnUz0Hesvx5EbiU6XxjyHZIOju+ZMbQJkRh+es3/spQ==",
      "dev": true,
      "license": "Apache-2.0",
      "bin": {
@@ -1822,9 +1768,9 @@
      }
    },
    "node_modules/brace-expansion": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.7.tgz",
-      "integrity": "sha512-7oFy703dxfY3/NLxC1fh2SUCQ0H9rmAY+5EpDVfXjUTTs+HEwR2nYaqLv+GWcTsumwxPfiz6CzCNkwXwBUwqCA==",
+      "version": "5.0.9",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.9.tgz",
+      "integrity": "sha512-ScQ4IuvIEF1TMlP7Zt+vjJ//9zlPb2SDcxWxM3bk8s6t6GGdJ7KO1dCcTidOPJKePW30LE/2cT7wCyPho9/Wxg==",
      "dev": true,
      "license": "MIT",
      "peer": true,
@@ -1832,13 +1778,13 @@
        "balanced-match": "^4.0.2"
      },
      "engines": {
-        "node": "18 || 20 || >=22"
+        "node": "20 || >=22"
      }
    },
    "node_modules/browserslist": {
-      "version": "4.28.6",
-      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.28.6.tgz",
-      "integrity": "sha512-FQBYNK15VMslhLHpA7+n+n1GOlF1kId2xcCg7/j95f24AOF6VDYMNH4mFxF7KuaTdv627faazpOAjFzMrfJOUw==",
+      "version": "4.28.9",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.28.9.tgz",
+      "integrity": "sha512-EWazOblFYUvlGZcfGhPUPmYh3nikUxBVb+y9MJun5f3hBi812X+8MSQTujLBtgK3cf51fJWbWfOjyeO954d+Eg==",
      "dev": true,
      "funding": [
        {
@@ -1856,11 +1802,11 @@
      ],
      "license": "MIT",
      "dependencies": {
-        "baseline-browser-mapping": "^2.10.42",
-        "caniuse-lite": "^1.0.30001803",
-        "electron-to-chromium": "^1.5.389",
-        "node-releases": "^2.0.51",
-        "update-browserslist-db": "^1.2.3"
+        "baseline-browser-mapping": "^2.11.20",
+        "caniuse-lite": "^1.0.30001810",
+        "electron-to-chromium": "^1.5.420",
+        "node-releases": "^2.0.54",
+        "update-browserslist-db": "^1.3.2"
      },
      "bin": {
        "browserslist": "cli.js"
@@ -1870,9 +1816,9 @@
      }
    },
    "node_modules/caniuse-lite": {
-      "version": "1.0.30001806",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001806.tgz",
-      "integrity": "sha512-72Cuvd95zbSYPKq6Fhg8eDJRlzgWDf7/mtoZv6Qe/DYNCEBdNxoA3+rZAU2ZhGCpZlns3EssFavaZomckT5Uuw==",
+      "version": "1.0.30001810",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001810.tgz",
+      "integrity": "sha512-TITQPUkaz+aVk5GL6NhOdwk1aEaNTSDPsGFWrTuhKGtjTF70jL/Oht2W4c6rXUe5fu7Ie19VIahAXHIIiWWNeg==",
      "dev": true,
      "funding": [
        {
@@ -1947,9 +1893,9 @@
      "peer": true
    },
    "node_modules/electron-to-chromium": {
-      "version": "1.5.394",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.394.tgz",
-      "integrity": "sha512-Wmt2Gm0o8JWBuGgmc4XZ0u9s1RaCRqhxP47phplmfg04+qypTUurpeJGP45A7Fhv7jdrrVH44PLlR9qXo37cVQ==",
+      "version": "1.5.422",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.422.tgz",
+      "integrity": "sha512-UvA/32XqrLDdZSn7Jllo1AYNcWji/G0d5M0GTViE7KoGBiMunw3a34Sb2KO4ZZyrSEhqsxFoVhWWJshdyfKqJA==",
      "dev": true,
      "license": "ISC"
    },
@@ -2562,9 +2508,9 @@
      "license": "MIT"
    },
    "node_modules/nanoid": {
-      "version": "3.3.16",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.16.tgz",
-      "integrity": "sha512-bzlKTyNJ7+LdGIIwy8ijFpIqEQIvafahV7eYykJ8Cvh42EdJeODoJ6gUJXpQJvej1BddH8OqTXZNE/KfbWAu8Q==",
+      "version": "3.3.18",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.18.tgz",
+      "integrity": "sha512-DTg4MJbGMWkfi6VZFdNt2/caMbQy4Ou+Op/hJQvGEWcnVfoA1QA+xzRKAzw9jD6+GVOOeYr/mIcuDSdug6F6+w==",
      "dev": true,
      "funding": [
        {
@@ -2589,9 +2535,9 @@
      "peer": true
    },
    "node_modules/node-releases": {
-      "version": "2.0.51",
-      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.51.tgz",
-      "integrity": "sha512-wRNIrw4DmVLKQlbgOMdkMx27Wrpzes2hh5Jtbi2bjPd+4wJstWIqP5A+lscnqbm0xxmT5Bpg8Lec5ItEBwx6BQ==",
+      "version": "2.0.54",
+      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.54.tgz",
+      "integrity": "sha512-YHs7BmmcsdAI5Ozuf8JZo6PT0mv2GIWC9vMfvUC3dp65M8hn7Ux8CPL+2oBI7juNuj9d0ndhTcznq2ODBps9cQ==",
      "dev": true,
      "license": "MIT",
      "engines": {
@@ -2694,9 +2640,9 @@
      }
    },
    "node_modules/postcss": {
-      "version": "8.5.21",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.21.tgz",
-      "integrity": "sha512-v4sDNP3fdNiWMfabO7OwOQdOX8TiQSztKyT1Wj0w+j7LDallJThJRBBBmzVGyYj0crMh7jlV4zepPkiNu9UwDQ==",
+      "version": "8.5.28",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.28.tgz",
+      "integrity": "sha512-RRuzqDtt5Y9h3quz5hWhK+TPnsmVs6WwSU6LkJMeY4HstUEDuYTG8UJSdawMRzmzAtV+KEoG8N3Qg2qLy5vM/A==",
      "dev": true,
      "funding": [
        {
@@ -2714,7 +2660,7 @@
      ],
      "license": "MIT",
      "dependencies": {
-        "nanoid": "^3.3.16",
+        "nanoid": "^3.3.18",
        "picocolors": "^1.1.1",
        "source-map-js": "^1.2.1"
      },
@@ -2962,9 +2908,9 @@
      }
    },
    "node_modules/update-browserslist-db": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/update-browserslist-db/-/update-browserslist-db-1.2.3.tgz",
-      "integrity": "sha512-Js0m9cx+qOgDxo0eMiFGEueWztz+d4+M3rGlmKPT+T4IS/jP4ylw3Nwpu6cpTTP8R1MAC1kF4VbdLt3ARf209w==",
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/update-browserslist-db/-/update-browserslist-db-1.3.2.tgz",
+      "integrity": "sha512-UQ+MSxlhRm1bzjhU+DcuXfjFO1FzNtqhK5+9Yvlp90ItDLk5vT932A0rFu619nf7RVS+Y/VeaUW1jaRDqZ8VJw==",
      "dev": true,
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@@ -175,7 +175,7 @@ checksum = "ae36dc4177970ef04fde5178d3e2429882def40e57a451f919c098f72baa6cec"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 3.0.2",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -225,6 +225,12 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"

+[[package]]
+name = "base64"
+version = "0.23.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac07cdecf99051d9a5238b80f35af32cdeba5b336e55d957b318b50137e18da5"
+
 [[package]]
 name = "bit-set"
 version = "0.8.0"
@@ -397,7 +403,7 @@ dependencies = [
 "semver",
 "serde",
 "serde_json",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 ]

 [[package]]
@@ -453,6 +459,17 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"

+[[package]]
+name = "chacha20"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.1",
+ "rand_core",
+]
+
 [[package]]
 name = "chrono"
 version = "0.4.45"
@@ -543,6 +560,15 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "cpufeatures"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ca28b0ae3115b884660db4118d803791fd6756b6e88f39c0f3f7859060d7566"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -618,9 +644,9 @@ checksum = "52560adf09603e58c9a7ee1fe1dcb95a16927b17c127f0ac02d6e768a0e25bc1"

 [[package]]
 name = "darling"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
+checksum = "ed17f5901b6630b993ca003def43f2f8ef4014fc13b047b57aad617ff32bc2ec"
 dependencies = [
 "darling_core",
 "darling_macro",
@@ -628,26 +654,26 @@ dependencies = [

 [[package]]
 name = "darling_core"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+checksum = "6837e2cf7485aaae18f86181d2f0e9a7ed297a025e220aeabf63fdebd3a2ddff"
 dependencies = [
 "ident_case",
 "proc-macro2",
 "quote",
 "strsim",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]

 [[package]]
 name = "darling_macro"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+checksum = "2ac7135c3ef02b2f7833bbeb1be5ba7f966dcde8a87c6b87f65a778d71a02785"
 dependencies = [
 "darling_core",
 "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -661,6 +687,37 @@ dependencies = [
 "windows-sys 0.61.2",
 ]

+[[package]]
+name = "defmt"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2953bfe4f93bbd20cc71198842756f77d161884c99ebbabc41d80231ded88d1"
+dependencies = [
+ "bitflags 1.3.2",
+ "defmt-macros",
+]
+
+[[package]]
+name = "defmt-macros"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bad9c72e7ca2137e0dc3813245a0d282fd6daad32fd800af018306a9169b5fe8"
+dependencies = [
+ "defmt-parser",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "defmt-parser"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10d60334b3b2e7c9d91ef8150abfb6fa4c1c39ebbcf4a81c2e346aad939fee3e"
+dependencies = [
+ "thiserror 2.0.21",
+]
+
 [[package]]
 name = "deranged"
 version = "0.5.8"
@@ -796,11 +853,13 @@ dependencies = [
 name = "dsp_thomann"
 version = "0.1.0"
 dependencies = [
+ "rand",
 "serde",
 "serde_json",
+ "serde_with",
 "strum",
 "strum_macros",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 ]

 [[package]]
@@ -1254,6 +1313,7 @@ dependencies = [
 "cfg-if",
 "libc",
 "r-efi 6.0.0",
+ "rand_core",
 ]

 [[package]]
@@ -1761,6 +1821,60 @@ dependencies = [
 "system-deps",
 ]

+[[package]]
+name = "jiff"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ab1baf72f08796de0260609515130699b890ac25f30e610ad894bc5856cafdb"
+dependencies = [
+ "defmt",
+ "jiff-core",
+ "jiff-static",
+ "jiff-tzdb-platform",
+ "log",
+ "portable-atomic",
+ "portable-atomic-util",
+ "serde_core",
+ "windows-link 0.2.1",
+]
+
+[[package]]
+name = "jiff-core"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e52fe76043ccecc9005d2305ebaadf7d7fc0cc89ca6baa10a94d6bc68c7128c"
+dependencies = [
+ "defmt",
+ "log",
+]
+
+[[package]]
+name = "jiff-static"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "378268a1116ad67ae6228701118ac9f491d78fda38a40a1f1a9e1348de6f7212"
+dependencies = [
+ "jiff-core",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "jiff-tzdb"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "142bd39932ad231f10513df9ab62661fead8719872150b7ad02a2df79f4e141e"
+
+[[package]]
+name = "jiff-tzdb-platform"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "875a5a69ac2bab1a891711cf5eccbec1ce0341ea805560dcd90b7a2e925132e8"
+dependencies = [
+ "jiff-tzdb",
+]
+
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -2004,7 +2118,7 @@ dependencies = [
 "once_cell",
 "png 0.18.1",
 "serde",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "windows-sys 0.61.2",
 ]

@@ -2492,6 +2606,21 @@ dependencies = [
 "windows-sys 0.61.2",
 ]

+[[package]]
+name = "portable-atomic"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05c8b63e8d9609db387f0324918f81d68fe27748f084ef092fb35954d0539a85"
+
+[[package]]
+name = "portable-atomic-util"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10ab3eb7f3becc3a1cbc4f2c6f20267996cfc1a6467a873763411b136a122715"
+dependencies = [
+ "portable-atomic",
+]
+
 [[package]]
 name = "potential_utf"
 version = "0.1.5"
@@ -2605,6 +2734,23 @@ version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"

+[[package]]
+name = "rand"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65c9fb96cbc91e3478eaae79a69fcd3f1ae4ad052e471fe6732fff548984b4af"
+dependencies = [
+ "chacha20",
+ "getrandom 0.4.3",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
@@ -2628,7 +2774,7 @@ checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
 dependencies = [
 "getrandom 0.2.17",
 "libredox",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 ]

 [[package]]
@@ -2648,7 +2794,7 @@ checksum = "2c9283685feec7d69af75fb0e858d5e7378f33fe4fc699383b2916ab9273e03c"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 3.0.2",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -2882,7 +3028,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 3.0.2",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -2917,7 +3063,7 @@ checksum = "8d3b1629de253c70a0508c3899572da79ca359fdab27c7920ff00406df418906"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 3.0.2",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -2940,16 +3086,17 @@ dependencies = [

 [[package]]
 name = "serde_with"
-version = "3.21.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76a5c54c7310e7b8b9577c286d7e399ddd876c3e12b3ed917a8aabc4b96e9e8c"
+checksum = "df9adc193c780ef8f159aee8b61e2d5801aaa555e6eb0947fe45530ec506296f"
 dependencies = [
- "base64 0.22.1",
+ "base64 0.23.1",
 "bs58",
 "chrono",
 "hex",
 "indexmap 1.9.3",
 "indexmap 2.14.0",
+ "jiff",
 "schemars 0.9.0",
 "schemars 1.2.1",
 "serde_core",
@@ -2960,14 +3107,14 @@ dependencies = [

 [[package]]
 name = "serde_with_macros"
-version = "3.21.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84d57bc0c8b9a17920c178daa6bb924850d54a9c97ab45194bb8c17ad66bb660"
+checksum = "3e17bbc68e28663bbbb90df47e058aa7eda4fb445b89fe70457bb94fbccf6e49"
 dependencies = [
 "darling",
 "proc-macro2",
 "quote",
- "syn 2.0.119",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -3008,7 +3155,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
 "cfg-if",
- "cpufeatures",
+ "cpufeatures 0.2.17",
 "digest",
 ]

@@ -3198,9 +3345,9 @@ dependencies = [

 [[package]]
 name = "syn"
-version = "3.0.2"
+version = "3.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a207d6d6a2b7fc470b80443726053f18a2481b7e1eee970597051596567987a3"
+checksum = "8593e8e72159ed2257d083c7a454a85cbf854f37a0966d8d483aff8c8a3ebcee"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -3299,9 +3446,9 @@ checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"

 [[package]]
 name = "tauri"
-version = "2.11.5"
+version = "2.11.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "667b20e2726d572dea2de7370da16e188eb06008faf9a92fab7cdc46791190b5"
+checksum = "6fa5bacdb9bbad5954af3d1bd6cf6ae9192cab1b2e270f4a07f904610b9e85f4"
 dependencies = [
 "anyhow",
 "bytes",
@@ -3338,7 +3485,7 @@ dependencies = [
 "tauri-runtime",
 "tauri-runtime-wry",
 "tauri-utils",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "tokio",
 "tray-icon",
 "url",
@@ -3389,7 +3536,7 @@ dependencies = [
 "sha2",
 "syn 2.0.119",
 "tauri-utils",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "time",
 "url",
 "uuid",
@@ -3428,9 +3575,9 @@ dependencies = [

 [[package]]
 name = "tauri-plugin-opener"
-version = "2.5.4"
+version = "2.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17e1bea14edce6b793a04e2417e3fd924b9bc4faae83cdee7d714156cceeed29"
+checksum = "60d60366174b745b4ef5824b8bbc1c457fd08f0ce101ff643c0a49181a9f4e91"
 dependencies = [
 "dunce",
 "glob",
@@ -3442,7 +3589,7 @@ dependencies = [
 "serde_json",
 "tauri",
 "tauri-plugin",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "url",
 "windows",
 "zbus",
@@ -3466,7 +3613,7 @@ dependencies = [
 "serde",
 "serde_json",
 "tauri-utils",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "url",
 "webkit2gtk",
 "webview2-com",
@@ -3529,7 +3676,7 @@ dependencies = [
 "serde_json",
 "serde_with",
 "swift-rs",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "toml 1.1.3+spec-1.1.0",
 "url",
 "urlpattern",
@@ -3581,11 +3728,11 @@ dependencies = [

 [[package]]
 name = "thiserror"
-version = "2.0.19"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09a43598840e33d5b0331f38c5e30d13bb11c11210a4b58f0d9b18a5a5eefcd9"
+checksum = "09e52cb86a36cede5cb101bf8908837b3e4c6e5e59fe7fd85c23fb56200d189e"
 dependencies = [
- "thiserror-impl 2.0.19",
+ "thiserror-impl 2.0.21",
 ]

 [[package]]
@@ -3601,13 +3748,13 @@ dependencies = [

 [[package]]
 name = "thiserror-impl"
-version = "2.0.19"
+version = "2.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43cbfe0cf76104d42a574802844187e84a305e531ed54455f11fbde0f10541cd"
+checksum = "fe5197923287db20a58125f0bc85c062f7f2c892de97b18c356f9efb14b28524"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 3.0.2",
+ "syn 3.0.6",
 ]

 [[package]]
@@ -3918,7 +4065,7 @@ dependencies = [
 "once_cell",
 "png 0.18.1",
 "serde",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "windows-sys 0.61.2",
 ]

@@ -4278,7 +4425,7 @@ version = "0.38.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "381336cfffd772377d291702245447a5251a2ffa5bad679c99e61bc48bacbf9c"
 dependencies = [
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "windows",
 "windows-core 0.61.2",
 ]
@@ -4713,7 +4860,7 @@ dependencies = [
 "sha2",
 "soup3",
 "tao-macros",
- "thiserror 2.0.19",
+ "thiserror 2.0.21",
 "url",
 "webkit2gtk",
 "webkit2gtk-sys",
@@ -18,8 +18,8 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 tauri-build = { version = "2", features = [] }

 [dependencies]
-tauri = { version = "2", features = [] }
-tauri-plugin-opener = "2"
+tauri = { version = "2.11.6", features = [] }
+tauri-plugin-opener = "2.5.5"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-dsp_thomann = { path = "../../dsp_thomann", features = ["serialization"] }
+dsp_thomann = { path = "../../dsp-thomann", features = ["serialization"] }
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <background android:drawable="@color/ic_launcher_background"/>
+</adaptive-icon>
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="ic_launcher_background">#fff</color>
+</resources>
@@ -0,0 +1,87 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="200"
+  height="200"
+  viewBox="0 0 200 200"
+>
+  <defs>
+    <linearGradient
+      id="richGradient"
+      x1="0%"
+      y1="0%"
+      x2="100%"
+      y2="100%"
+    >
+      <stop offset="0%" stop-color="#1e3a8a" stop-opacity="1"/>
+      <stop offset="25%" stop-color="#2d3485"/>
+      <stop offset="45%" stop-color="#4c2e7f"/>
+      <stop offset="60%" stop-color="#6b2878"/>
+      <stop offset="80%" stop-color="#b9326e"/>
+      <stop offset="100%" stop-color="#ea437a" stop-opacity="1"/>
+    </linearGradient>
+
+    <radialGradient
+      id="darkenGradient"
+      cx="50%"
+      cy="50%"
+      r="50%"
+    >
+      <stop offset="0%" stop-color="#ffffff" stop-opacity="0.3"/>
+      <stop offset="30%" stop-color="#ffffff" stop-opacity="0.1"/>
+      <stop offset="60%" stop-color="#000000" stop-opacity="0"/>
+      <stop offset="80%" stop-color="#000000" stop-opacity="0.2"/>
+      <stop offset="100%" stop-color="#000000" stop-opacity="0.5"/>
+    </radialGradient>
+
+    <linearGradient
+      id="shadowGradient"
+      x1="20%"
+      y1="20%"
+      x2="80%"
+      y2="80%"
+    >
+      <stop offset="0%" stop-color="#0f1d42"/>
+      <stop offset="25%" stop-color="#1f2a5d"/>
+      <stop offset="45%" stop-color="#332f78"/>
+      <stop offset="60%" stop-color="#5f3458"/>
+      <stop offset="80%" stop-color="#7a2250"/>
+      <stop offset="100%" stop-color="#a50d57"/>
+    </linearGradient>
+  </defs>
+
+  <!-- Main donut -->
+  <path
+    d="
+      M100,20
+      A80,80 0 1,1 99.9,20
+      M100,60
+      A40,40 0 1,0 100.1,60
+    "
+    fill="url(#richGradient)"
+    fill-rule="evenodd"
+  />
+
+  <!-- Darkening / depth overlay -->
+  <path
+    d="
+      M100,20
+      A80,80 0 1,1 99.9,20
+      M100,60
+      A40,40 0 1,0 100.1,60
+    "
+    fill="url(#darkenGradient)"
+    fill-rule="evenodd"
+  />
+
+  <!-- Inner shadow -->
+  <path
+    d="
+      M100,60
+      A40,40 0 1,0 100.1,60
+      M100,75
+      A25,25 0 1,1 99.9,75
+    "
+    fill="url(#shadowGradient)"
+    fill-rule="evenodd"
+  />
+</svg>
@@ -41,16 +41,28 @@ impl AppState {
    }
 }

+#[derive(serde::Serialize)]
+pub struct DSP408Snapshot {
+    pub state: types::DSPState,
+    pub input_meters: types::InputMeters,
+    pub output_meters: types::OutputMeters,
+}
+
 #[tauri::command]
 pub fn create_dsp408(
    state: State<AppState>,
    ip: String,
    port: u16,
    device_id: u8,
+    demo: bool,
 ) -> Result<u64, String> {
    let ip = IpAddr::from_str(&ip).map_err(|e| e.to_string())?;

-    let dsp = DSP408::new(ip, port, device_id).map_err(|e| e.to_string())?;
+    let dsp = if demo {
+        DSP408::new_demo()
+    } else {
+        DSP408::new(ip, port, device_id).map_err(|e| e.to_string())?
+    };

    let mut next_id = state.next_id.lock().map_err(|e| e.to_string())?;

@@ -82,14 +94,16 @@ pub async fn remove_dsp408(state: State<'_, AppState>, id: u64) -> Result<(), St
 }

 #[tauri::command]
-pub async fn connect_dsp408(state: State<'_, AppState>, id: u64) -> Result<(), String> {
-    state.with_device_mut(id, |device| device.dsp.connect().map_err(|e| e.to_string()))
-}
-
-#[tauri::command]
-pub async fn disconnect_dsp408(state: State<'_, AppState>, id: u64) -> Result<(), String> {
+pub async fn get_dsp_snapshot(
+    state: State<'_, AppState>,
+    id: u64,
+) -> Result<DSP408Snapshot, String> {
    state.with_device_mut(id, |device| {
-        device.dsp.disconnect().map_err(|e| e.to_string())
+        Ok(DSP408Snapshot {
+            state: device.dsp.state().clone(),
+            input_meters: device.dsp.input_meters().clone(),
+            output_meters: device.dsp.output_meters().clone(),
+        })
    })
 }

@@ -99,63 +113,39 @@ pub async fn get_dsp_state(
    id: u64,
 ) -> Result<dsp_thomann::dsp408::types::DSPState, String> {
    state.with_device_mut(id, |device| {
-        let dsp_state = device.dsp.state().map_err(|e| e.to_string())?;
+        let dsp_state = device.dsp.state();

        Ok(dsp_state.clone())
    })
 }

+// Commands
 #[tauri::command]
-pub async fn set_channel_gain(
-    state: State<'_, AppState>,
-    id: u64,
-    channel: dsp_thomann::dsp408::types::Channel,
-    db: f32,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        let r = device
-            .dsp
-            .set_channel_gain(channel, db)
-            .map_err(|e| e.to_string())?;
+pub async fn connect_dsp408(state: State<'_, AppState>, id: u64) -> Result<(), String> {
+    state.with_device_mut(id, |device| device.dsp.connect().map_err(|e| e.to_string()))
+}

-        Ok(r)
+// Command `0x11`
+#[tauri::command]
+pub async fn disconnect_dsp408(state: State<'_, AppState>, id: u64) -> Result<(), String> {
+    state.with_device_mut(id, |device| {
+        device.dsp.disconnect().map_err(|e| e.to_string())
    })
 }

+// Command `0x15`
 #[tauri::command]
-pub async fn set_mute(
+pub async fn set_delay_unit(
    state: State<'_, AppState>,
    id: u64,
-    channel: dsp_thomann::dsp408::types::Channel,
-    muted: bool,
+    unit: types::DelayUnit,
 ) -> Result<bool, String> {
    state.with_device_mut(id, |device| {
-        let r = device
-            .dsp
-            .set_mute(channel, muted)
-            .map_err(|e| e.to_string())?;
-
-        Ok(r)
-    })
-}
-
-#[tauri::command]
-pub async fn set_channel_inverse_gain(
-    state: State<'_, AppState>,
-    id: u64,
-    channel: dsp_thomann::dsp408::types::Channel,
-    inverted: bool,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        let r = device
-            .dsp
-            .set_channel_inverse_gain(channel, inverted)
-            .map_err(|e| e.to_string())?;
-
-        Ok(r)
+        device.dsp.set_delay_unit(unit).map_err(|e| e.to_string())
    })
 }

+// Command `0x20`
 #[tauri::command]
 pub async fn recall_preset(
    state: State<'_, AppState>,
@@ -172,16 +162,35 @@ pub async fn recall_preset(
    })
 }

+// Command `0x21` -- TODO
 #[tauri::command]
-pub async fn get_meter_levels(
+pub async fn store_current_configuration(
    state: State<'_, AppState>,
    id: u64,
-) -> Result<dsp_thomann::dsp408::types::Meters, String> {
+    preset_index: usize,
+    force: bool,
+) -> Result<bool, String> {
    state.with_device_mut(id, |device| {
-        device.dsp.get_meter_levels().map_err(|e| e.to_string())
+        device
+            .dsp
+            .store_current_configuration(preset_index, force)
+            .map_err(|e| e.to_string())
    })
 }

+// Command `0x23`
+#[tauri::command]
+pub async fn factory_reset(
+    state: State<'_, AppState>,
+    id: u64,
+    force: bool,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device.dsp.factory_reset(force).map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x26`
 #[tauri::command]
 pub async fn set_current_preset_name(
    state: State<'_, AppState>,
@@ -196,24 +205,53 @@ pub async fn set_current_preset_name(
    })
 }

+// Command `0x2A`
 #[tauri::command]
-pub async fn set_gate(
+pub async fn copy_channel(
    state: State<'_, AppState>,
    id: u64,
-    channel: types::InputChannel,
-    threshold: f32,
-    attack: u16,
-    hold: u16,
-    release: u16,
+    channel_1: types::Channel,
+    channel_2: types::Channel,
 ) -> Result<bool, String> {
    state.with_device_mut(id, |device| {
        device
            .dsp
-            .set_gate(channel, threshold, attack, hold, release)
+            .copy_channel(channel_1, channel_2)
            .map_err(|e| e.to_string())
    })
 }

+// Command `0x2D` -- TODO
+#[tauri::command]
+pub async fn unlock_device(
+    state: State<'_, AppState>,
+    id: u64,
+    password: String,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .unlock_device(&password)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x2F`
+#[tauri::command]
+pub async fn lock_device(
+    state: State<'_, AppState>,
+    id: u64,
+    password: String,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .lock_device(&password)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x30`
 #[tauri::command]
 pub async fn set_compressor(
    state: State<'_, AppState>,
@@ -233,112 +271,7 @@ pub async fn set_compressor(
    })
 }

-#[tauri::command]
-pub async fn set_limiter(
-    state: State<'_, AppState>,
-    id: u64,
-    channel: types::OutputChannel,
-    threshold: f32,
-    attack: u16,
-    release: u16,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_limiter(channel, threshold, attack, release)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_delay_unit(
-    state: State<'_, AppState>,
-    id: u64,
-    unit: types::DelayUnit,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device.dsp.set_delay_unit(unit).map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_delay(
-    state: State<'_, AppState>,
-    id: u64,
-    channel: types::Channel,
-    delay: f32,
-    unit: DelayUnit,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_delay(channel, delay, unit)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_matrix_routing(
-    state: State<'_, AppState>,
-    id: u64,
-    output: types::OutputChannel,
-    inputs: Vec<types::InputChannel>,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_matrix_routing(output, inputs)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_matrix_gain(
-    state: State<'_, AppState>,
-    id: u64,
-    input_channel: types::InputChannel,
-    output_channel: types::OutputChannel,
-    gain: f32,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_matrix_gain(input_channel, output_channel, gain)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_geq_band(
-    state: State<'_, AppState>,
-    id: u64,
-    input_channel: types::InputChannel,
-    frequency_band: types::DiscreteFrequency,
-    gain: f32,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_geq_band(input_channel, frequency_band, gain)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn set_geq_bypass(
-    state: State<'_, AppState>,
-    id: u64,
-    input_channel: types::InputChannel,
-    bypass: bool,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .set_geq_bypass(input_channel, bypass)
-            .map_err(|e| e.to_string())
-    })
-}
-
+// Command `0x31`
 #[tauri::command]
 pub async fn set_low_pass(
    state: State<'_, AppState>,
@@ -355,6 +288,7 @@ pub async fn set_low_pass(
    })
 }

+// Command `0x32`
 #[tauri::command]
 pub async fn set_high_pass(
    state: State<'_, AppState>,
@@ -371,6 +305,7 @@ pub async fn set_high_pass(
    })
 }

+// Command `0x33`
 #[tauri::command]
 pub async fn set_peq_band(
    state: State<'_, AppState>,
@@ -391,47 +326,78 @@ pub async fn set_peq_band(
    })
 }

+// Command `0x34`
 #[tauri::command]
-pub async fn store_current_configuration(
+pub async fn set_channel_gain(
    state: State<'_, AppState>,
    id: u64,
-    preset_index: usize,
-    force: bool,
+    channel: dsp_thomann::dsp408::types::Channel,
+    db: f32,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        let r = device
+            .dsp
+            .set_channel_gain(channel, db)
+            .map_err(|e| e.to_string())?;
+
+        Ok(r)
+    })
+}
+
+// Command `0x35`
+#[tauri::command]
+pub async fn set_mute(
+    state: State<'_, AppState>,
+    id: u64,
+    channel: dsp_thomann::dsp408::types::Channel,
+    muted: bool,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        let r = device
+            .dsp
+            .set_mute(channel, muted)
+            .map_err(|e| e.to_string())?;
+
+        Ok(r)
+    })
+}
+
+// Command `0x36`
+#[tauri::command]
+pub async fn set_channel_inverse_gain(
+    state: State<'_, AppState>,
+    id: u64,
+    channel: dsp_thomann::dsp408::types::Channel,
+    inverted: bool,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        let r = device
+            .dsp
+            .set_channel_inverse_gain(channel, inverted)
+            .map_err(|e| e.to_string())?;
+
+        Ok(r)
+    })
+}
+
+// Command `0x38`
+#[tauri::command]
+pub async fn set_delay(
+    state: State<'_, AppState>,
+    id: u64,
+    channel: types::Channel,
+    delay: f32,
+    unit: DelayUnit,
 ) -> Result<bool, String> {
    state.with_device_mut(id, |device| {
        device
            .dsp
-            .store_current_configuration(preset_index, force)
-            .map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn factory_reset(
-    state: State<'_, AppState>,
-    id: u64,
-    force: bool,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device.dsp.factory_reset(force).map_err(|e| e.to_string())
-    })
-}
-
-#[tauri::command]
-pub async fn copy_channel(
-    state: State<'_, AppState>,
-    id: u64,
-    channel_1: types::Channel,
-    channel_2: types::Channel,
-) -> Result<bool, String> {
-    state.with_device_mut(id, |device| {
-        device
-            .dsp
-            .copy_channel(channel_1, channel_2)
+            .set_delay(channel, delay, unit)
            .map_err(|e| e.to_string())
    })
 }

+// Command `0x39`
 #[tauri::command]
 pub async fn set_input_source(
    state: State<'_, AppState>,
@@ -446,6 +412,23 @@ pub async fn set_input_source(
    })
 }

+// Command `0x3A`
+#[tauri::command]
+pub async fn set_matrix_routing(
+    state: State<'_, AppState>,
+    id: u64,
+    output: types::OutputChannel,
+    inputs: Vec<types::InputChannel>,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_matrix_routing(output, inputs)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x3B`
 #[tauri::command]
 pub async fn link_channels(
    state: State<'_, AppState>,
@@ -461,6 +444,7 @@ pub async fn link_channels(
    })
 }

+// Command `0x3C`
 #[tauri::command]
 pub async fn set_bypass_peq(
    state: State<'_, AppState>,
@@ -476,6 +460,7 @@ pub async fn set_bypass_peq(
    })
 }

+// Command `0x3D` -- TODO
 #[tauri::command]
 pub async fn set_channel_name(
    state: State<'_, AppState>,
@@ -490,3 +475,101 @@ pub async fn set_channel_name(
            .map_err(|e| e.to_string())
    })
 }
+
+// Command `0x3E`
+#[tauri::command]
+pub async fn set_gate(
+    state: State<'_, AppState>,
+    id: u64,
+    channel: types::InputChannel,
+    threshold: f32,
+    attack: u16,
+    hold: u16,
+    release: u16,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_gate(channel, threshold, attack, hold, release)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x3F`
+#[tauri::command]
+pub async fn set_limiter(
+    state: State<'_, AppState>,
+    id: u64,
+    channel: types::OutputChannel,
+    threshold: f32,
+    attack: u16,
+    release: u16,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_limiter(channel, threshold, attack, release)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x40`
+#[tauri::command]
+pub async fn get_meter_levels(
+    state: State<'_, AppState>,
+    id: u64,
+) -> Result<(types::InputMeters, types::OutputMeters), String> {
+    state.with_device_mut(id, |device| {
+        device.dsp.get_meter_levels().map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x41`
+#[tauri::command]
+pub async fn set_matrix_gain(
+    state: State<'_, AppState>,
+    id: u64,
+    input_channel: types::InputChannel,
+    output_channel: types::OutputChannel,
+    gain: f32,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_matrix_gain(input_channel, output_channel, gain)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x48`
+#[tauri::command]
+pub async fn set_geq_band(
+    state: State<'_, AppState>,
+    id: u64,
+    input_channel: types::InputChannel,
+    frequency_band: types::DiscreteFrequency,
+    gain: f32,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_geq_band(input_channel, frequency_band, gain)
+            .map_err(|e| e.to_string())
+    })
+}
+
+// Command `0x49`
+#[tauri::command]
+pub async fn set_geq_bypass(
+    state: State<'_, AppState>,
+    id: u64,
+    input_channel: types::InputChannel,
+    bypass: bool,
+) -> Result<bool, String> {
+    state.with_device_mut(id, |device| {
+        device
+            .dsp
+            .set_geq_bypass(input_channel, bypass)
+            .map_err(|e| e.to_string())
+    })
+}
@@ -11,6 +11,7 @@ pub fn run() {
        .invoke_handler(tauri::generate_handler![
            commands::create_dsp408,
            commands::remove_dsp408,
+            commands::get_dsp_snapshot,
            commands::get_dsp_state,
            commands::connect_dsp408,    // 0x10
            commands::disconnect_dsp408, // 0x11
@@ -20,6 +21,8 @@ pub fn run() {
            commands::factory_reset,     // 0x23
            commands::set_current_preset_name, // 0x26
            commands::copy_channel,      // 0x2A
+            commands::unlock_device,     // Command `0x2D`
+            commands::lock_device,       // Command `0x2F`
            commands::set_compressor,    // 0x30
            commands::set_low_pass,      // 0x31
            commands::set_high_pass,     // 0x32
@@ -12,9 +12,9 @@
  "app": {
    "windows": [
      {
-        "title": "thomann-dsp-app",
-        "width": 1200,
-        "height": 800,
+        "title": "Thomann DSP Controller",
+        "width": 1600,
+        "height": 950,
        "minWidth": 1200,
        "minHeight": 600
      }
@@ -27,11 +27,11 @@
    "active": true,
    "targets": "all",
    "icon": [
-      "icons/32x32.png",
-      "icons/128x128.png",
-      "icons/128x128@2x.png",
-      "icons/icon.icns",
-      "icons/icon.ico"
+      "./icons/32x32.png",
+      "./icons/128x128.png",
+      "./icons/128x128@2x.png",
+      "./icons/icon.icns",
+      "./icons/icon.ico"
    ]
  }
 }
@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef } from 'react';
 import './App.css';
-import { DSP, AppPage } from './types';
+import { DSP, AppPage, isConnected } from './types';
 import TopBar from './components/Topbar/Topbar';
 import DSPPage from './pages/DspPage/DspPage';
 import AddDSPForm from './pages/AddDspPage/AddDspPage';
@@ -17,7 +17,7 @@ function App() {
  const [selected, setSelected] = useState<number | null>(null);
  const [page, setPage] = useState<AppPage>('home');
  const { notifications, notify, removeNotification, hoverNotification } = useNotifications();
-  const connectedDspCount = dsps.filter((dsp) => dsp.status === 'connected').length;
+  const connectedDspCount = dsps.filter((dsp) => isConnected(dsp)).length;

  const activeDsp = dsps.find((d) => d.id === selected) ?? null;
  const activeInstance = activeDsp ? createDSPInstance(activeDsp, setDsps, notify) : null;
@@ -84,3 +84,152 @@ export function TextIcon({
    </svg>
  );
 }
+
+export function SlidersVerticalIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path d="M10 8H14" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M12 21V12" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M12 8V3" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+
+      <path d="M17 16H21" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M19 12V3" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M19 21V16" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+
+      <path d="M3 14H7" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M5 10V3" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+      <path d="M5 21V14" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+    </svg>
+  );
+}
+
+export function BoltIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M21 16V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16Z"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <circle cx="12" cy="12" r="4" stroke="currentColor" strokeWidth="2" />
+    </svg>
+  );
+}
+
+export function GainIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M3 12H7M17 12H21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <path
+        d="M7 4.5L17 12L7 19.5V4.5Z"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+
+export function GateIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M3 3V21H21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        opacity="0.35"
+      />
+      <path
+        d="M3 21H12L20 5"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+
+export function CompressorIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M3 3V21H21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        opacity="0.35"
+      />
+      <path
+        d="M3 21L11 13L21 8"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+
+export function LimiterIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M3 3V21H21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        opacity="0.35"
+      />
+      <path
+        d="M3 21L11 8H21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+
+export function DelayIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M4 5V19M12 8.5V15.5M20 11V13"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
+
+export function MatrixIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path d="M3 7C11 7 11 4 21 4" />
+      <path d="M3 7C11 7 11 20 21 20" />
+      <path d="M3 17C11 17 11 12 21 12" />
+      <circle cx="3" cy="7" r="1.6" fill="none" />
+      <circle cx="3" cy="17" r="1.6" fill="none" />
+      <circle cx="21" cy="4" r="1.6" fill="none" />
+      <circle cx="21" cy="12" r="1.6" fill="none" />
+      <circle cx="21" cy="20" r="1.6" fill="none" />
+    </svg>
+  );
+}
@@ -0,0 +1,42 @@
+export function EyeIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M2 12C2 12 5.5 5 12 5C18.5 5 22 12 22 12C22 12 18.5 19 12 19C5.5 19 2 12 2 12Z"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <circle cx="12" cy="12" r="3" stroke="currentColor" strokeWidth="2" />
+    </svg>
+  );
+}
+
+export function EyeOffIcon(props: React.SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
+      <path
+        d="M3 3L21 21"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <path
+        d="M10.6 5.2C11.05 5.07 11.52 5 12 5C18.5 5 22 12 22 12C22 12 20.7 14.6 18.3 16.5M6.2 6.2C3.5 8.1 2 12 2 12C2 12 5.5 19 12 19C13.2 19 14.3 18.8 15.3 18.4"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+      <path
+        d="M9.9 9.9C9.35 10.45 9 11.2 9 12C9 13.66 10.34 15 12 15C12.8 15 13.55 14.65 14.1 14.1"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+      />
+    </svg>
+  );
+}
@@ -2,7 +2,7 @@ export function TriangleUpIcon(props: React.SVGProps<SVGSVGElement>) {
  return (
    <svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
      <path
-        d="M8 3L13 10H3L8 3Z"
+        d="M8 3L2 12H14L8 3Z"
        stroke="currentColor"
        strokeWidth="1.5"
        fill="transparent"
@@ -16,7 +16,7 @@ export function TriangleDownIcon(props: React.SVGProps<SVGSVGElement>) {
  return (
    <svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" {...props}>
      <path
-        d="M8 13L3 6H13L8 13Z"
+        d="M8 13L2 4H14L8 13Z"
        stroke="currentColor"
        strokeWidth="1.5"
        fill="transparent"
@@ -2,21 +2,21 @@
  display: flex;
  align-items: center;
  justify-content: center;
-
  box-sizing: border-box;

  min-height: var(--card-control-height);
-
  padding: 0 var(--space-4);

  border: var(--border-width) solid transparent;
  border-radius: var(--radius-sm);

  font-family: var(--font-ui);
-  font-size: var(--font-md);
+  font-size: 13px;
  font-weight: var(--font-weight-medium);

  cursor: pointer;
+  user-select: none;
+  -webkit-user-select: none;
 }

 .btn:disabled {
@@ -24,27 +24,54 @@
  cursor: not-allowed;
 }

+/* ------------------------------------------------------------------ */
+/* Variants                                                           */
+/* ------------------------------------------------------------------ */
+
 .btn-primary {
  background: var(--accent-brand);
  color: var(--bg-void);
 }

+/* Ghost + Toggle */
 .btn-ghost,
-.btn-toggle,
-.btn-outline {
+.btn-toggle {
  background: transparent;
  border-color: var(--border-hairline);
  color: var(--text-muted);
 }

+/* Outline */
+.btn-outline {
+  background: transparent;
+  border-color: var(--accent-brand);
+  color: #fff;
+}
+
+/* ------------------------------------------------------------------ */
+/* Hover                                                              */
+/* ------------------------------------------------------------------ */
+
+.btn-primary:hover:not(:disabled) {
+  background: color-mix(in srgb, var(--accent-brand) 95%, white);
+  color: var(--text-primary);
+}
+
 .btn-ghost:hover:not(:disabled),
-.btn-toggle:hover:not(:disabled),
-.btn-outline:hover:not(:disabled) {
+.btn-toggle:hover:not(:disabled) {
  background: var(--bg-raised);
  color: var(--text-primary);
 }

+.btn-outline:hover:not(:disabled) {
+  border-color: var(--accent-brand);
+  color: var(--text-muted);
+}
+
+/* ------------------------------------------------------------------ */
 /* Active toggle states                                                */
+/* ------------------------------------------------------------------ */
+
 .btn-toggle.active-info {
  background: var(--accent-brand);
  border-color: var(--accent-brand);
@@ -63,7 +90,10 @@
  color: var(--bg-void);
 }

-/* Optional: active state hover */
+/* ------------------------------------------------------------------ */
+/* Active toggle hover                                                 */
+/* ------------------------------------------------------------------ */
+
 .btn-toggle.active-info:hover:not(:disabled) {
  background: var(--accent-brand);
  border-color: var(--accent-brand);
@@ -7,7 +7,6 @@ interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: ButtonVariant;
  children: ReactNode;
  className?: string;
-  fontSize?: number;
 }

 export default function Button({
@@ -15,7 +14,6 @@ export default function Button({
  children,
  className = '',
  disabled,
-  fontSize = 13,
  type = 'button',
  style,
  ...props
@@ -26,7 +24,6 @@ export default function Button({
      className={`btn btn-${variant} ${className}`}
      disabled={disabled}
      style={{
-        fontSize: `${fontSize}px`,
        ...style,
      }}
      {...props}
@@ -1,18 +1,21 @@
 .channel-group {
  position: relative;
-  flex: 1 1 0;
-  min-height: 0;

+  flex: 0 0 auto;
+  width: fit-content;
+  min-width: 0;
+
+  min-height: 0;
  display: flex;

  border: var(--border-width) solid var(--border-hairline);
  border-radius: var(--radius-md);
-
  padding: 6cqh var(--space-3) 1cqh;
  margin-bottom: 1cqh;
  margin-top: 1cqh;
+
  box-sizing: border-box;
-  overflow: visible; /* in case something upstream set hidden */
+  overflow: visible;
 }

 .channel-group__label {
@@ -36,6 +39,9 @@
  display: flex;
  flex-direction: row;
  align-items: stretch;
+
+  width: fit-content;
  height: 100%;
+
  gap: var(--space-1);
 }
@@ -0,0 +1,125 @@
+/* ChoiceSelect.css */
+.choice-select {
+  position: relative;
+  display: flex;
+
+  color: var(--accent-brand);
+}
+
+.choice-select[data-disabled] {
+  opacity: 0.5;
+}
+
+.choice-select__trigger {
+  flex: 1 1 auto;
+  width: 100%;
+  height: 100%;
+
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+
+  padding: 0;
+  padding-inline: 5%;
+
+  background: transparent;
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+
+  font-family: var(--font-ui);
+  font-size: 90%;
+
+  color: inherit;
+
+  cursor: pointer;
+  transition: border-color var(--dur-base) var(--ease-standard);
+}
+
+.choice-select__trigger:hover,
+.choice-select__trigger--open {
+  border-color: var(--accent-brand);
+}
+
+.choice-select__trigger:disabled {
+  cursor: not-allowed;
+}
+
+.choice-select__label {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.choice-select__chevron {
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+
+  width: 4cqh;
+  aspect-ratio: 1;
+
+  color: var(--accent-brand);
+  transition: transform var(--dur-base) var(--ease-standard);
+}
+
+.choice-select__trigger--open .choice-select__chevron {
+  transform: rotate(180deg);
+}
+
+.choice-select__chevron svg {
+  width: 50%;
+  height: auto;
+  display: block;
+}
+
+.choice-select__option {
+  padding: 1%;
+  border-radius: var(--radius-sm);
+  font-size: 100%;
+  color: var(--text-primary);
+  cursor: pointer;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.choice-select__option--highlight {
+  background: var(--bg-raised);
+}
+
+.choice-select__option--selected {
+  color: var(--accent-brand);
+  font-weight: var(--font-weight-semibold);
+}
+
+.choice-select__listbox {
+  position: absolute;
+  left: 0;
+  right: 0;
+  z-index: 40;
+
+  top: calc(100% + var(--space-1));
+
+  margin: 0;
+  padding: var(--space-1);
+  list-style: none;
+
+  background: var(--bg-panel);
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
+
+  max-height: 240px;
+  overflow-y: auto;
+}
+
+.choice-select__listbox--up {
+  top: auto;
+  bottom: calc(100% + var(--space-1));
+}
+
+.choice-select__listbox--portal {
+  position: fixed;
+  z-index: 1000; /* clear of any local stacking contexts in the panel */
+}
@@ -0,0 +1,232 @@
+// ChoiceSelect.tsx
+import { useEffect, useRef, useState } from 'react';
+import { createPortal } from 'react-dom';
+import { TriangleDownIcon } from '../../assets/icons/Triangle';
+import './ChoiceSelect.css';
+
+type ChoiceSelectProps<T extends string> = {
+  value: T;
+  options: readonly T[];
+  formatLabel?: (value: T) => string;
+  onChange: (value: T) => void;
+  id?: string;
+  disabled?: boolean;
+  className?: string;
+  style?: React.CSSProperties;
+};
+
+const LISTBOX_MAX_HEIGHT = 240; // keep in sync with .choice-select__listbox max-height
+const LISTBOX_GAP = 4; // px, ~= var(--space-1)
+
+type Coords = { top: number; left: number; width: number; fontSize: number };
+
+function ChoiceSelect<T extends string>({
+  value,
+  options,
+  formatLabel = (v) => v,
+  onChange,
+  id,
+  disabled,
+  className = '',
+  style,
+}: ChoiceSelectProps<T>) {
+  const [open, setOpen] = useState(false);
+  const [highlight, setHighlight] = useState(0);
+  const [dropUp, setDropUp] = useState(false);
+  const [coords, setCoords] = useState<Coords | null>(null);
+
+  const rootRef = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
+  const listboxRef = useRef<HTMLUListElement>(null);
+  const suppressNextClick = useRef(false);
+
+  useEffect(() => {
+    function handleMouseDown(e: MouseEvent) {
+      const target = e.target as Node;
+      const clickedOutside =
+        rootRef.current &&
+        !rootRef.current.contains(target) &&
+        !listboxRef.current?.contains(target);
+
+      if (clickedOutside && open) {
+        setOpen(false);
+        suppressNextClick.current = true;
+      }
+    }
+
+    function handleClickCapture(e: MouseEvent) {
+      if (suppressNextClick.current) {
+        e.preventDefault();
+        e.stopPropagation();
+        suppressNextClick.current = false;
+      }
+    }
+
+    document.addEventListener('mousedown', handleMouseDown);
+    document.addEventListener('click', handleClickCapture, true); // capture phase
+    return () => {
+      document.removeEventListener('mousedown', handleMouseDown);
+      document.removeEventListener('click', handleClickCapture, true);
+    };
+  }, [open]);
+
+  // Re-check placement/position on scroll/resize while open — the trigger's
+  // position can change (e.g. inside a scrollable panel), and since the
+  // listbox is portaled it won't move with it automatically.
+  useEffect(() => {
+    if (!open) return;
+    const recalc = () => updatePlacement();
+    window.addEventListener('scroll', recalc, true);
+    window.addEventListener('resize', recalc);
+    return () => {
+      window.removeEventListener('scroll', recalc, true);
+      window.removeEventListener('resize', recalc);
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [open]);
+
+  const step = (direction: 1 | -1) => {
+    const currentIndex = options.indexOf(value);
+    if (currentIndex === -1 || options.length === 0) return;
+    const nextIndex = (currentIndex + direction + options.length) % options.length;
+    onChange(options[nextIndex]);
+  };
+
+  function updatePlacement() {
+    const el = triggerRef.current;
+    if (!el) return;
+
+    const rect = el.getBoundingClientRect();
+    const spaceBelow = window.innerHeight - rect.bottom;
+    const spaceAbove = rect.top;
+    const needsFlip = spaceBelow < LISTBOX_MAX_HEIGHT && spaceAbove > spaceBelow;
+    setDropUp(needsFlip);
+
+    // Capture the trigger's resolved font-size (its cqh has already resolved
+    // correctly here, since it's still inside the real container tree) and
+    // carry it as a plain px value into the portal, where cqh would break.
+    const fontSize = parseFloat(getComputedStyle(el).fontSize);
+
+    setCoords({
+      top: needsFlip ? rect.top - LISTBOX_GAP : rect.bottom + LISTBOX_GAP,
+      left: rect.left,
+      width: rect.width,
+      fontSize,
+    });
+  }
+
+  function openList() {
+    if (disabled) return;
+    updatePlacement();
+    setOpen(true);
+    const idx = options.indexOf(value);
+    setHighlight(idx >= 0 ? idx : 0);
+  }
+
+  function pick(opt: T) {
+    if (opt !== value) onChange(opt);
+    setOpen(false);
+    triggerRef.current?.focus();
+  }
+
+  function handleKeyDown(e: React.KeyboardEvent) {
+    if (disabled) return;
+
+    if (!open) {
+      if (e.key === 'Enter' || e.key === ' ' || e.key === 'ArrowDown') {
+        e.preventDefault();
+        openList();
+      }
+      return;
+    }
+
+    if (e.key === 'ArrowDown' || (e.key === 'Tab' && !e.shiftKey)) {
+      e.preventDefault();
+      setHighlight((h) => Math.min(h + 1, options.length - 1));
+    } else if (e.key === 'ArrowUp' || (e.key === 'Tab' && e.shiftKey)) {
+      e.preventDefault();
+      setHighlight((h) => Math.max(h - 1, 0));
+    } else if (e.key === 'Enter' || e.key === ' ') {
+      e.preventDefault();
+      pick(options[highlight]);
+    } else if (e.key === 'Escape') {
+      e.preventDefault();
+      setOpen(false);
+      triggerRef.current?.focus();
+    }
+  }
+
+  return (
+    <div
+      className={`choice-select ${className}`}
+      data-disabled={disabled || undefined}
+      ref={rootRef}
+      style={style}
+    >
+      <button
+        id={id}
+        type="button"
+        ref={triggerRef}
+        className={'choice-select__trigger' + (open ? ' choice-select__trigger--open' : '')}
+        onClick={() => (open ? setOpen(false) : openList())}
+        onKeyDown={handleKeyDown}
+        onWheel={(e) => {
+          e.preventDefault();
+          if (disabled) return;
+          if (e.deltaY < 0) step(-1);
+          else if (e.deltaY > 0) step(1);
+        }}
+        disabled={disabled}
+        aria-haspopup="listbox"
+        aria-expanded={open}
+      >
+        <span className="choice-select__label">{formatLabel(value)}</span>
+        <span className="choice-select__chevron" aria-hidden="true">
+          <TriangleDownIcon />
+        </span>
+      </button>
+
+      {open &&
+        coords &&
+        createPortal(
+          <ul
+            ref={listboxRef}
+            className={
+              'choice-select__listbox choice-select__listbox--portal' +
+              (dropUp ? ' choice-select__listbox--up' : '')
+            }
+            role="listbox"
+            style={{
+              fontSize: coords.fontSize,
+              left: coords.left,
+              width: coords.width,
+              // dropUp needs top: auto + bottom instead, see CSS note below
+              ...(dropUp
+                ? { top: 'auto', bottom: window.innerHeight - coords.top }
+                : { top: coords.top }),
+            }}
+          >
+            {options.map((option, i) => (
+              <li
+                key={option}
+                role="option"
+                aria-selected={option === value}
+                className={
+                  'choice-select__option' +
+                  (option === value ? ' choice-select__option--selected' : '') +
+                  (i === highlight ? ' choice-select__option--highlight' : '')
+                }
+                onMouseEnter={() => setHighlight(i)}
+                onClick={() => pick(option)}
+              >
+                {formatLabel(option)}
+              </li>
+            ))}
+          </ul>,
+          document.body
+        )}
+    </div>
+  );
+}
+
+export default ChoiceSelect;
@@ -0,0 +1,92 @@
+.choice-stepper {
+  width: 100%;
+  flex: 1 1 auto;
+
+  position: relative;
+  display: flex;
+  align-items: stretch;
+
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+  background: transparent;
+}
+
+.choice-stepper__input {
+  flex: 1 1 auto;
+  min-width: 0;
+  width: 100%;
+
+  font-family: var(--font-mono);
+  font-size: var(--font--sm);
+  font-weight: var(--font-weight-normal);
+  text-align: left;
+
+  color: var(--accent-brand);
+  background: transparent;
+  border: none;
+
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.choice-stepper__input:focus {
+  outline: none;
+}
+
+.choice-stepper__arrows {
+  flex: 0 0 auto;
+  align-self: stretch;
+
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+
+  height: 100%;
+  box-sizing: border-box;
+
+  padding-right: 1%;
+}
+
+.choice-stepper__arrow-btn {
+  height: 50%;
+  min-width: 0;
+  min-height: 0;
+
+  display: flex;
+  align-items: center;
+  justify-content: center;
+
+  padding: 0;
+
+  color: var(--accent-brand);
+  background: transparent;
+  border: none;
+  border-radius: var(--radius-md);
+
+  cursor: pointer;
+}
+
+.choice-stepper__arrow-btn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.choice-stepper__arrow-btn svg {
+  display: block;
+  height: 100%;
+}
+
+.choice-stepper[data-disabled] {
+  opacity: 0.45;
+  filter: grayscale(1);
+}
+
+.choice-stepper__input:disabled {
+  cursor: not-allowed;
+}
+
+.choice-stepper[data-disabled] .choice-stepper__input,
+.choice-stepper[data-disabled] .choice-stepper__arrow-btn {
+  color: var(--border-hairline);
+}
@@ -0,0 +1,404 @@
+import { JSX, useEffect, useRef, useState } from 'react';
+import Button from '../Button/Button';
+import { TriangleUpIcon, TriangleDownIcon } from '../../assets/icons/Triangle';
+import './ChoiceStepper.css';
+
+const WHEEL_COMMIT_DELAY = 250;
+// Safety net: if the parent's `value` prop never comes back exactly equal
+// to what we committed (rounding, an intermediate transform, etc.), stop
+// waiting after this long so the stepper doesn't get stuck ignoring
+// external updates.
+const PENDING_FALLBACK_MS = 1000;
+
+type CommitResult = Promise<boolean | void> | boolean | void;
+
+function StepperArrows({
+  onUp,
+  onDown,
+  canUp,
+  canDown,
+  disabled,
+}: {
+  onUp: () => void;
+  onDown: () => void;
+  canUp: boolean;
+  canDown: boolean;
+  disabled?: boolean;
+}) {
+  return (
+    <div className="choice-stepper__arrows">
+      <Button
+        variant="toggle"
+        className="choice-stepper__arrow-btn"
+        onClick={onUp}
+        disabled={disabled || !canUp}
+      >
+        <TriangleUpIcon />
+      </Button>
+      <Button
+        variant="toggle"
+        className="choice-stepper__arrow-btn"
+        onClick={onDown}
+        disabled={disabled || !canDown}
+      >
+        <TriangleDownIcon />
+      </Button>
+    </div>
+  );
+}
+
+// ---- List variant ----
+
+type ChoiceStepperListProps<T> = {
+  value: T;
+  values: readonly T[];
+  formatLabel: (value: T) => string;
+  onChange: (value: T) => CommitResult;
+  id?: string;
+  disabled?: boolean;
+  className?: string;
+};
+
+function ChoiceStepperList<T>({
+  value,
+  values,
+  formatLabel,
+  onChange,
+  id,
+  disabled,
+  className,
+}: ChoiceStepperListProps<T>) {
+  const [localValue, setLocalValue] = useState(value);
+  const [text, setText] = useState(formatLabel(value));
+
+  // True from the moment a commit starts until the prop `value` we get from
+  // the parent actually reflects it (not just until onChange resolves —
+  // those are two different moments and the gap between them is what was
+  // causing the old-value blink).
+  const interacting = useRef(false);
+  // The value we're waiting to see echoed back via the `value` prop.
+  const pendingValue = useRef<T | null>(null);
+  const wheelTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const fallbackTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  useEffect(() => {
+    if (interacting.current) {
+      // Only release control once the prop actually catches up to what we
+      // committed — otherwise keep showing localValue as-is (no flash back
+      // to the stale old value in between).
+      if (pendingValue.current !== null && Object.is(value, pendingValue.current)) {
+        interacting.current = false;
+        pendingValue.current = null;
+        if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+      } else {
+        return;
+      }
+    }
+    setLocalValue(value);
+    setText(formatLabel(value));
+  }, [value, formatLabel]);
+
+  useEffect(() => {
+    return () => {
+      if (wheelTimeout.current) clearTimeout(wheelTimeout.current);
+      if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+    };
+  }, []);
+
+  const index = values.indexOf(localValue);
+  const canUp = index === -1 || index < values.length - 1;
+  const canDown = index > 0;
+
+  const stepLocal = (direction: 1 | -1): T | null => {
+    const currentIndex = values.indexOf(localValue);
+    if (currentIndex === -1) return null;
+
+    const nextIndex = currentIndex + direction;
+    if (nextIndex < 0 || nextIndex >= values.length) return null;
+
+    const next = values[nextIndex];
+    setLocalValue(next);
+    setText(formatLabel(next));
+    return next;
+  };
+
+  async function commit(next: T) {
+    interacting.current = true;
+    pendingValue.current = next;
+
+    const result = await onChange(next);
+
+    if (result === false) {
+      interacting.current = false;
+      pendingValue.current = null;
+      if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+      setLocalValue(value);
+      setText(formatLabel(value));
+      return;
+    }
+
+    // Accepted: don't clear `interacting` here. Wait for the prop-sync
+    // effect above to see `value === next` and release it, so we never
+    // hand control back to a still-stale prop. Guard with a timeout in
+    // case it never matches exactly.
+    if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+    fallbackTimeout.current = setTimeout(() => {
+      interacting.current = false;
+      pendingValue.current = null;
+    }, PENDING_FALLBACK_MS);
+  }
+
+  const stepAndCommit = (direction: 1 | -1) => {
+    const next = stepLocal(direction);
+    if (next !== null) void commit(next);
+  };
+
+  const stepWheel = (direction: 1 | -1) => {
+    const next = stepLocal(direction);
+    if (next === null) return;
+
+    interacting.current = true;
+    if (wheelTimeout.current) clearTimeout(wheelTimeout.current);
+    wheelTimeout.current = setTimeout(() => {
+      wheelTimeout.current = null;
+      void commit(next);
+    }, WHEEL_COMMIT_DELAY);
+  };
+
+  const commitText = () => {
+    const match = values.find(
+      (v) => formatLabel(v).trim().toLowerCase() === text.trim().toLowerCase()
+    );
+    if (match !== undefined) {
+      setLocalValue(match);
+      void commit(match);
+    } else {
+      setText(formatLabel(value));
+    }
+  };
+
+  return (
+    <div className={`choice-stepper ${className ?? ''}`} data-disabled={disabled || undefined}>
+      <input
+        id={id}
+        className="choice-stepper__input"
+        value={text}
+        disabled={disabled}
+        onChange={(e) => setText(e.target.value)}
+        onBlur={commitText}
+        onWheel={(e) => {
+          e.preventDefault();
+
+          if (e.deltaY < 0 && canUp) {
+            stepWheel(1);
+          } else if (e.deltaY > 0 && canDown) {
+            stepWheel(-1);
+          }
+        }}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter') {
+            e.currentTarget.blur();
+          } else if (e.key === 'ArrowUp') {
+            e.preventDefault();
+            interacting.current = true;
+            stepLocal(1);
+          } else if (e.key === 'ArrowDown') {
+            e.preventDefault();
+            interacting.current = true;
+            stepLocal(-1);
+          }
+        }}
+        onKeyUp={(e) => {
+          if (e.key !== 'ArrowUp' && e.key !== 'ArrowDown') return;
+          void commit(localValue);
+        }}
+      />
+      <StepperArrows
+        onUp={() => stepAndCommit(1)}
+        onDown={() => stepAndCommit(-1)}
+        canUp={canUp}
+        canDown={canDown}
+        disabled={disabled}
+      />
+    </div>
+  );
+}
+
+// ---- Range variant (concrete, no generic) ----
+
+type ChoiceStepperRangeProps = {
+  value: number;
+  min: number;
+  max: number;
+  step?: number;
+  formatLabel: (value: number) => string;
+  onChange: (value: number) => CommitResult;
+  id?: string;
+  disabled?: boolean;
+  className?: string;
+};
+
+function ChoiceStepperRange({
+  value,
+  min,
+  max,
+  step: stepSize = 1,
+  formatLabel,
+  onChange,
+  id,
+  disabled,
+  className,
+}: ChoiceStepperRangeProps) {
+  const [localValue, setLocalValue] = useState(value);
+  const [text, setText] = useState(formatLabel(value));
+
+  const interacting = useRef(false);
+  const pendingValue = useRef<number | null>(null);
+  const wheelTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const fallbackTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  useEffect(() => {
+    if (interacting.current) {
+      if (pendingValue.current !== null && Object.is(value, pendingValue.current)) {
+        interacting.current = false;
+        pendingValue.current = null;
+        if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+      } else {
+        return;
+      }
+    }
+    setLocalValue(value);
+    setText(formatLabel(value));
+  }, [value, formatLabel]);
+
+  useEffect(() => {
+    return () => {
+      if (wheelTimeout.current) clearTimeout(wheelTimeout.current);
+      if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+    };
+  }, []);
+
+  const clamp = (n: number) => Math.min(max, Math.max(min, n));
+
+  const canUp = localValue < max;
+  const canDown = localValue > min;
+
+  const stepLocal = (direction: 1 | -1): number | null => {
+    const next = clamp(localValue + direction * stepSize);
+    if (next === localValue) return null;
+    setLocalValue(next);
+    setText(formatLabel(next));
+    return next;
+  };
+
+  async function commit(next: number) {
+    interacting.current = true;
+    pendingValue.current = next;
+
+    const result = await onChange(next);
+
+    if (result === false) {
+      interacting.current = false;
+      pendingValue.current = null;
+      if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+      setLocalValue(value);
+      setText(formatLabel(value));
+      return;
+    }
+
+    if (fallbackTimeout.current) clearTimeout(fallbackTimeout.current);
+    fallbackTimeout.current = setTimeout(() => {
+      interacting.current = false;
+      pendingValue.current = null;
+    }, PENDING_FALLBACK_MS);
+  }
+
+  const stepAndCommit = (direction: 1 | -1) => {
+    const next = stepLocal(direction);
+    if (next !== null) void commit(next);
+  };
+
+  const stepWheel = (direction: 1 | -1) => {
+    const next = stepLocal(direction);
+    if (next === null) return;
+
+    interacting.current = true;
+    if (wheelTimeout.current) clearTimeout(wheelTimeout.current);
+    wheelTimeout.current = setTimeout(() => {
+      wheelTimeout.current = null;
+      void commit(next);
+    }, WHEEL_COMMIT_DELAY);
+  };
+
+  const commitText = () => {
+    const parsed = Number(text);
+    if (Number.isFinite(parsed)) {
+      const next = clamp(parsed);
+      setLocalValue(next);
+      void commit(next);
+    } else {
+      setText(formatLabel(value));
+    }
+  };
+
+  return (
+    <div className={`choice-stepper ${className ?? ''}`} data-disabled={disabled || undefined}>
+      <input
+        id={id}
+        className="choice-stepper__input"
+        value={text}
+        disabled={disabled}
+        onChange={(e) => setText(e.target.value)}
+        onBlur={commitText}
+        onWheel={(e) => {
+          e.preventDefault();
+
+          if (e.deltaY < 0 && canUp) {
+            stepWheel(1);
+          } else if (e.deltaY > 0 && canDown) {
+            stepWheel(-1);
+          }
+        }}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter') {
+            e.currentTarget.blur();
+          } else if (e.key === 'ArrowUp') {
+            e.preventDefault();
+            if (canUp) {
+              interacting.current = true;
+              stepLocal(1);
+            }
+          } else if (e.key === 'ArrowDown') {
+            e.preventDefault();
+            if (canDown) {
+              interacting.current = true;
+              stepLocal(-1);
+            }
+          }
+        }}
+        onKeyUp={(e) => {
+          if (e.key !== 'ArrowUp' && e.key !== 'ArrowDown') return;
+          void commit(localValue);
+        }}
+      />
+      <StepperArrows
+        onUp={() => stepAndCommit(1)}
+        onDown={() => stepAndCommit(-1)}
+        canUp={canUp}
+        canDown={canDown}
+        disabled={disabled}
+      />
+    </div>
+  );
+}
+
+function ChoiceStepper<T>(props: ChoiceStepperListProps<T>): JSX.Element;
+function ChoiceStepper(props: ChoiceStepperRangeProps): JSX.Element;
+function ChoiceStepper(props: ChoiceStepperListProps<unknown> | ChoiceStepperRangeProps) {
+  if ('values' in props) {
+    return <ChoiceStepperList {...props} />;
+  }
+  return <ChoiceStepperRange {...props} />;
+}
+
+export default ChoiceStepper;
@@ -33,7 +33,7 @@ export interface LinearGraphProps {
  yMin: number;
  yMax: number;
  yStep?: number;
-  /** 'log' requires xMin > 0. Ticks are drawn at 1/2/5-per-decade mantissas, with decade (power-of-10) lines highlighted. */
+  /** 'log' requires xMin > 0. */
  xScale?: AxisScale;
  /** 'log' requires yMin > 0. */
  yScale?: AxisScale;
@@ -55,7 +55,7 @@ export interface LinearGraphProps {
 const defaultFormat = (v: number) => {
  if (Math.abs(v) < 1e-9) return '0';
  const abs = Math.abs(v);
-  if (abs >= 1000 || abs < 0.01) return v.toExponential(1);
+  if (abs >= 100000 || abs < 0.01) return v.toExponential(1);
  return parseFloat(v.toFixed(4)).toString();
 };

@@ -150,7 +150,7 @@ export const LinearGraph = forwardRef<LinearGraphHandle, LinearGraphProps>(funct
    const topBase = cq.h * 3;
    const rightBase = cq.w * 5;
    const bottomBase = cq.h * 4;
-    const leftBase = cq.w * 2;
+    const leftBase = cq.w * 7;
    const xLabelSpace = xLabel ? cq.h * 7 : 0;
    const yLabelSpace = yLabel ? Math.min(cq.w * 6, 24) : 0;

@@ -221,7 +221,7 @@ export const LinearGraph = forwardRef<LinearGraphHandle, LinearGraphProps>(funct
    ctx.clearRect(0, 0, cssW, cssH);

    const plot = {
-      x: pad.left + cq.w * 2,
+      x: pad.left,
      y: pad.top,
      width: Math.max(1, cssW - pad.left - pad.right - cq.w * 2),
      height: Math.max(1, cssH - pad.top - pad.bottom),
@@ -271,14 +271,14 @@ export const LinearGraph = forwardRef<LinearGraphHandle, LinearGraphProps>(funct
      ctx.fillRect(plot.x, plot.y, plot.width, plot.height);
    }

-    const clipPad = 2;
+    const borderInset = 1; // Avoid clipping outside graph bounds
    ctx.save();
    ctx.beginPath();
    ctx.rect(
-      plot.x - clipPad,
-      plot.y - clipPad,
-      plot.width + clipPad * 2,
-      plot.height + clipPad * 2
+      plot.x + borderInset,
+      plot.y + borderInset,
+      plot.width - borderInset * 2,
+      plot.height - borderInset * 2
    );
    ctx.clip();

@@ -3,6 +3,9 @@
  flex-direction: column;
  align-items: left;
  gap: 0.3cqh;
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .meter-bar__title {
@@ -1,7 +1,7 @@
 .notifications {
  position: fixed;
  right: var(--space-5);
-  bottom: var(--space-5);
+  top: var(--space-5);
  z-index: 9999;

  display: flex;
@@ -18,6 +18,9 @@
  overflow: visible;

  transition: width var(--dur-base) var(--ease-standard);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .sidebar-rail--expanded {
@@ -32,13 +35,14 @@
  justify-content: center;

  flex: 0 0 auto;
+  gap: var(--space-1);
  padding: var(--space-1);
  height: var(--header-height);
 }

 .sidebar-rail--expanded .sidebar-header {
  justify-content: space-between;
-  padding-inline: var(--space-3);
+  padding-left: var(--space-3);
 }

 .sidebar-toggle {
@@ -361,3 +365,54 @@
 .app-root--sidebar-expanded .stage--with-sidebar {
  margin-left: var(--sidebar-width-expanded);
 }
+
+/* ---------- Item (editing state) ---------- */
+
+.sidebar-item--editing {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--sidebar-item-gap);
+
+  aspect-ratio: 1;
+  height: calc(var(--header-height) * 0.7);
+
+  border: none;
+
+  background: transparent;
+  padding: 0;
+}
+
+.sidebar-item-input {
+  width: 0;
+  flex: 1 1 auto;
+  min-width: 0;
+
+  appearance: none;
+  -webkit-appearance: none;
+  background: transparent;
+  border: none;
+  outline: none;
+  box-shadow: none;
+
+  text-align: center;
+
+  color: var(--text-primary);
+  font-family: var(--font-ui);
+  font-size: var(--font-sm);
+  font-weight: var(--font-weight-semibold);
+
+  opacity: 0;
+  max-width: 0;
+
+  transition:
+    opacity var(--dur-fast) var(--ease-standard),
+    max-width var(--dur-base) var(--ease-standard);
+}
+
+.sidebar-rail--expanded .sidebar-item-input {
+  width: auto;
+  opacity: 1;
+  max-width: 200px;
+  border: none;
+}
@@ -2,10 +2,11 @@ import { useEffect, useRef, useState } from 'react';
 import './Sidebar.css';
 import { ChevronLeftIcon } from '../../assets/icons/ChevronLeftIcon';

-export type SidebarItem = {
-  id: string;
+export type SidebarItem<T extends string = string> = {
+  id: T;
  label: string;
  icon: React.ReactNode;
+  editable?: boolean;
 };

 export type SidebarAppOption = {
@@ -13,15 +14,79 @@ export type SidebarAppOption = {
  name: string;
 };

-function SidebarButton({
+function SidebarButton<T extends string>({
  item,
  active,
  onSelect,
+  onRename,
 }: {
-  item: SidebarItem;
+  item: SidebarItem<T>;
  active: boolean;
  onSelect: () => void;
+  onRename?: (name: string) => void;
 }) {
+  const [editing, setEditing] = useState(false);
+  const [inputValue, setInputValue] = useState(item.label);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!editing) setInputValue(item.label);
+  }, [item.label, editing]);
+
+  function startEditing(e: React.MouseEvent) {
+    e.stopPropagation();
+    if (!onRename) return;
+
+    setInputValue(item.label);
+    setEditing(true);
+
+    requestAnimationFrame(() => {
+      inputRef.current?.focus();
+      inputRef.current?.select();
+    });
+  }
+
+  function commitRename() {
+    setEditing(false);
+
+    const trimmed = inputValue.trim();
+
+    if (!trimmed || trimmed === item.label) {
+      setInputValue(item.label);
+      return;
+    }
+
+    onRename?.(trimmed);
+  }
+
+  function handleKeyDown(e: React.KeyboardEvent) {
+    if (e.key === 'Enter') inputRef.current?.blur();
+
+    if (e.key === 'Escape') {
+      setInputValue(item.label);
+      setEditing(false);
+    }
+  }
+
+  if (editing) {
+    return (
+      <div className="sidebar-item sidebar-item--editing">
+        <span className="sidebar-icon">{item.icon}</span>
+
+        <input
+          ref={inputRef}
+          className="sidebar-item-input"
+          value={inputValue}
+          maxLength={8}
+          onChange={(e) => setInputValue(e.target.value.slice(0, 8))}
+          onBlur={commitRename}
+          onKeyDown={handleKeyDown}
+          aria-label="Rename channel"
+        />
+      </div>
+    );
+  }
+
  return (
    <button
      onClick={onSelect}
@@ -31,7 +96,14 @@ function SidebarButton({
      className={'sidebar-item' + (active ? ' sidebar-item--active' : '')}
    >
      <span className="sidebar-icon">{item.icon}</span>
-      <span className="sidebar-label">{item.label}</span>
+
+      <span
+        className="sidebar-label"
+        onDoubleClick={onRename ? startEditing : undefined}
+        title={onRename ? `${item.label} (double click to rename)` : undefined}
+      >
+        {item.label}
+      </span>
    </button>
  );
 }
@@ -46,8 +118,8 @@ function AppCombobox({
  appOptions: SidebarAppOption[];
  selectedAppId?: string;
  appName: string;
-  onAppChange?: (id: string) => void;
-  onAppRename?: (name: string) => void;
+  onAppChange: (id: string) => void;
+  onAppRename: (name: string) => void;
 }) {
  const currentOption = appOptions.find((o) => o.id === selectedAppId) ?? appOptions[0];
  const canRename = currentOption?.id !== 'f00';
@@ -95,6 +167,7 @@ function AppCombobox({

    if (!canRename) return;

+    setInputValue((currentOption?.name ?? appName).trim());
    setEditing(true);
    setOpen(false);

@@ -124,13 +197,13 @@ function AppCombobox({

    if (matched) {
      if (matched.id !== selectedAppId) {
-        onAppChange?.(matched.id);
+        onAppChange(matched.id);
      }
      return;
    }

    if (trimmed !== currentOption?.name) {
-      onAppRename?.(trimmed);
+      onAppRename(trimmed);
    }
  }

@@ -186,6 +259,7 @@ function AppCombobox({
          onKeyDown={handleKeyDown}
          aria-haspopup="listbox"
          aria-expanded={open}
+          title={canRename ? 'Double click to rename' : undefined}
        >
          <span className="sidebar-app-trigger-label">{currentOption?.name ?? appName}</span>
          <svg className="sidebar-app-trigger-caret" viewBox="0 0 24 24" width="14" height="14">
@@ -209,7 +283,8 @@ function AppCombobox({
              onMouseEnter={() => setHighlight(i)}
              onClick={() => pick(opt)}
            >
-              {opt.name}
+              <span className="sidebar-app-option-id">{opt.id + '-'}</span>
+              <span>{opt.name}</span>
            </li>
          ))}
        </ul>
@@ -218,7 +293,7 @@ function AppCombobox({
  );
 }

-export default function Sidebar({
+export function Sidebar<T extends string>({
  items,
  activeId,
  onSelect,
@@ -227,17 +302,19 @@ export default function Sidebar({
  selectedAppId,
  onAppChange,
  onAppRename,
+  onItemRename,
  expanded,
  onToggle,
 }: {
-  items: SidebarItem[];
-  activeId: string | null;
-  onSelect: (id: string) => void;
+  items: SidebarItem<T>[];
+  activeId: T | null;
+  onSelect: (id: T) => void;
  appName: string;
  appOptions?: SidebarAppOption[];
  selectedAppId?: string;
-  onAppChange?: (id: string) => void;
-  onAppRename?: (name: string) => void;
+  onAppChange: (id: string) => void;
+  onAppRename: (name: string) => void;
+  onItemRename?: (id: T, name: string) => void;
  expanded: boolean;
  onToggle: () => void;
 }) {
@@ -295,6 +372,9 @@ export default function Sidebar({
            item={item}
            active={activeId === item.id}
            onSelect={() => onSelect(item.id)}
+            onRename={
+              item.editable && onItemRename ? (name) => onItemRename(item.id, name) : undefined
+            }
          />
        ))}
      </div>
@@ -0,0 +1,33 @@
+.signal-flow {
+  width: 100%;
+  height: 100%;
+}
+
+.signal-flow__svg {
+  width: 100%;
+  height: 100%;
+  display: block;
+}
+
+.signal-flow__chain-line {
+  stroke: var(--border-hairline, #333);
+  stroke-width: 1;
+}
+
+.signal-flow__stage {
+  fill: var(--bg-void);
+  stroke: var(--border-hairline);
+  stroke-width: 1;
+  transition: fill 0.1s ease;
+}
+
+.signal-flow__stage:hover {
+  fill: var(--bg-panel);
+}
+
+.signal-flow__stage-label {
+  font-family: var(--font-ui);
+  font-size: 13px;
+  fill: var(--text-primary, #e5e7eb);
+  pointer-events: none;
+}
@@ -0,0 +1,354 @@
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { InputChannel, OutputChannel } from '../../features/dsp408/types';
+import { DSP408 } from '../../types';
+import {
+  INPUT_ORDER,
+  OUTPUT_ORDER,
+  MATRIX_GAIN_MIN,
+  MATRIX_GAIN_MAX,
+  MATRIX_GAIN_STEP,
+} from '../../features/dsp408/constants';
+import { SidebarId } from '../../features/dsp408/constants';
+import './SignalFlowMatrix.css';
+
+const INPUT_SIDEBAR: Record<InputChannel, SidebarId> = {
+  InA: 'ina',
+  InB: 'inb',
+  InC: 'inc',
+  InD: 'ind',
+};
+
+const OUTPUT_SIDEBAR: Record<OutputChannel, SidebarId> = {
+  Out1: 'out1',
+  Out2: 'out2',
+  Out3: 'out3',
+  Out4: 'out4',
+  Out5: 'out5',
+  Out6: 'out6',
+  Out7: 'out7',
+  Out8: 'out8',
+};
+
+const INPUT_STAGES: {
+  key: string;
+  label: string;
+  sidebar: SidebarId | 'input';
+}[] = [
+  { key: 'gain', label: 'GAIN', sidebar: 'gain' },
+  { key: 'gate', label: 'GATE', sidebar: 'gate' },
+  { key: 'geq', label: 'GEQ', sidebar: 'geq' },
+  { key: 'peq', label: 'PEQ', sidebar: 'input' },
+  { key: 'hplp', label: 'HP/LP', sidebar: 'input' },
+  { key: 'delay', label: 'DELAY', sidebar: 'delay' },
+];
+
+const OUTPUT_STAGES: {
+  key: string;
+  label: string;
+  sidebar: SidebarId | 'output';
+}[] = [
+  { key: 'xover', label: 'XOVER', sidebar: 'output' },
+  { key: 'peq', label: 'PEQ', sidebar: 'output' },
+  { key: 'gain', label: 'GAIN', sidebar: 'gain' },
+  { key: 'compressor', label: 'COMP', sidebar: 'compressor' },
+  { key: 'limiter', label: 'LIMIT', sidebar: 'limiter' },
+  { key: 'delay', label: 'DELAY', sidebar: 'delay' },
+  { key: 'mute', label: 'MUTE', sidebar: 'output' },
+];
+
+const INPUT_COLORS = [
+  'var(--accent-a, #60a5fa)',
+  'var(--accent-b, #34d399)',
+  'var(--accent-c, #f59e0b)',
+  'var(--accent-d, #f472b6)',
+];
+
+const W = 1800;
+const H = 520;
+const MARGIN = 36;
+const LEFT_CHAIN_W = 560;
+const RIGHT_CHAIN_W = 620;
+
+// Width of the invisible "hitbox" stroke drawn under each visible line, in SVG
+// user units. Much wider than the visible 1–2.5px line so it's easy to click
+// or catch with a scroll wheel without needing pixel-perfect aim.
+const LINE_HITBOX_WIDTH = 14;
+
+// How long the gain tooltip stays visible after the last wheel tick, in ms.
+const GAIN_TOOLTIP_HOLD_MS = 700;
+
+function getRoutes(dsp: DSP408, output: OutputChannel) {
+  return dsp.state.current_config.output_states[output].matrix_routes;
+}
+function isRouted(dsp: DSP408, output: OutputChannel, input: InputChannel) {
+  return getRoutes(dsp, output).connected.includes(input);
+}
+function getGain(dsp: DSP408, output: OutputChannel, input: InputChannel) {
+  return getRoutes(dsp, output).gains[input];
+}
+
+function formatGainDb(value: number) {
+  const sign = value > 0 ? '+' : '';
+  return `${sign}${value.toFixed(1)} dB`;
+}
+
+type GainTooltipState = {
+  visible: boolean;
+  x: number;
+  y: number;
+  label: string;
+};
+
+function SignalFlowMatrix({
+  dsp,
+  setMatrixRouting,
+  setMatrixGain,
+  setActiveSidebar,
+}: {
+  dsp: DSP408;
+  setMatrixRouting: (output: OutputChannel, inputs: InputChannel[]) => Promise<boolean>;
+  setMatrixGain: (input: InputChannel, output: OutputChannel, gain: number) => Promise<boolean>;
+  setActiveSidebar: React.Dispatch<React.SetStateAction<SidebarId>>;
+}) {
+  const nInputs = INPUT_ORDER.length;
+  const nOutputs = OUTPUT_ORDER.length;
+
+  const usableH = H - MARGIN * 2;
+  const inputRowH = usableH / nInputs;
+  const outputRowH = usableH / nOutputs;
+
+  const inputStageW = LEFT_CHAIN_W / (INPUT_STAGES.length + 1);
+  const outputStageW = RIGHT_CHAIN_W / (OUTPUT_STAGES.length + 1);
+
+  const leftStart = MARGIN;
+  const rightStart = W - MARGIN - RIGHT_CHAIN_W;
+
+  const inputCenterY = (i: number) => MARGIN + inputRowH * (i + 0.5);
+  const outputCenterY = (j: number) => MARGIN + outputRowH * (j + 0.5);
+
+  const inputNodeX = leftStart + LEFT_CHAIN_W;
+  const outputNodeX = rightStart;
+
+  const [gainTooltip, setGainTooltip] = useState<GainTooltipState>({
+    visible: false,
+    x: 0,
+    y: 0,
+    label: '',
+  });
+  const hideTooltipTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  useEffect(() => {
+    return () => {
+      if (hideTooltipTimer.current) clearTimeout(hideTooltipTimer.current);
+    };
+  }, []);
+
+  const handleToggle = (output: OutputChannel, input: InputChannel) => {
+    const routes = getRoutes(dsp, output);
+    const next = routes.connected.includes(input)
+      ? routes.connected.filter((c) => c !== input)
+      : [...routes.connected, input];
+    void setMatrixRouting(output, next);
+  };
+
+  const handleWheelGain = (e: React.WheelEvent, output: OutputChannel, input: InputChannel) => {
+    e.preventDefault();
+    const current = getGain(dsp, output, input);
+    const delta = e.deltaY < 0 ? MATRIX_GAIN_STEP : -MATRIX_GAIN_STEP;
+    const next =
+      Math.round(Math.min(MATRIX_GAIN_MAX, Math.max(MATRIX_GAIN_MIN, current + delta)) * 10) / 10;
+    void setMatrixGain(input, output, next);
+
+    // Show a small tooltip with the new gain value right next to the cursor,
+    // then let it fade away shortly after wheeling stops.
+    if (hideTooltipTimer.current) clearTimeout(hideTooltipTimer.current);
+    setGainTooltip({
+      visible: true,
+      x: e.clientX,
+      y: e.clientY,
+      label: formatGainDb(next),
+    });
+    hideTooltipTimer.current = setTimeout(() => {
+      setGainTooltip((t) => ({ ...t, visible: false }));
+    }, GAIN_TOOLTIP_HOLD_MS);
+  };
+
+  const routePairs = useMemo(() => {
+    const pairs: { input: InputChannel; output: OutputChannel; i: number; j: number }[] = [];
+    OUTPUT_ORDER.forEach((output, j) => {
+      INPUT_ORDER.forEach((input, i) => pairs.push({ input, output, i, j }));
+    });
+    return pairs;
+  }, []);
+
+  // Draw dashed (unconnected) links first so connected (solid) links always
+  // paint on top of them, regardless of input/output index order. This has
+  // to be recomputed whenever routing changes, since isRouted reads live
+  // dsp state — unlike routePairs above, which is just static index pairs.
+  const orderedRoutePairs = useMemo(() => {
+    return [...routePairs].sort((a, b) => {
+      const aConnected = isRouted(dsp, a.output, a.input) ? 1 : 0;
+      const bConnected = isRouted(dsp, b.output, b.input) ? 1 : 0;
+      return aConnected - bConnected;
+    });
+  }, [routePairs, dsp]);
+
+  return (
+    <div className="signal-flow">
+      <svg
+        viewBox={`0 0 ${W} ${H}`}
+        preserveAspectRatio="xMidYMid meet"
+        className="signal-flow__svg"
+      >
+        {orderedRoutePairs.map(({ input, output, i, j }) => {
+          const connected = isRouted(dsp, output, input);
+          const y1 = inputCenterY(i);
+          const y2 = outputCenterY(j);
+          const cx1 = inputNodeX + (outputNodeX - inputNodeX) * 0.4;
+          const cx2 = inputNodeX + (outputNodeX - inputNodeX) * 0.6;
+          const path = `M ${inputNodeX} ${y1} C ${cx1} ${y1}, ${cx2} ${y2}, ${outputNodeX} ${y2}`;
+          const color = INPUT_COLORS[i % INPUT_COLORS.length];
+
+          return (
+            <g key={`${input}-${output}`}>
+              {/* Invisible wide-stroke hitbox: carries the click/wheel handlers so
+                  the line is easy to grab without needing to hit the thin visible
+                  stroke exactly. Sits directly under the visible path. */}
+              <path
+                d={path}
+                fill="none"
+                stroke="transparent"
+                strokeWidth={LINE_HITBOX_WIDTH}
+                style={{ cursor: 'pointer' }}
+                onClick={() => handleToggle(output, input)}
+                onWheel={connected ? (e) => handleWheelGain(e, output, input) : undefined}
+              />
+              {/* Visible line, purely decorative — no pointer events, so it never
+                  competes with the hitbox above for hover/click/wheel. */}
+              <path
+                d={path}
+                fill="none"
+                stroke={connected ? color : 'var(--border-hairline, #333)'}
+                strokeWidth={connected ? 2.5 : 1}
+                strokeDasharray={connected ? undefined : '4 5'}
+                opacity={connected ? 0.9 : 0.35}
+                pointerEvents="none"
+              />
+            </g>
+          );
+        })}
+
+        {INPUT_ORDER.map((input, i) => {
+          const y = inputCenterY(i);
+          const boxH = Math.min(inputRowH * 0.55, 40);
+          const name = dsp.state.current_config.input_states[input].name;
+          const boxes = [{ key: 'name', label: name, sidebar: 'input' as const }, ...INPUT_STAGES];
+          return (
+            <g key={input}>
+              {boxes.map((stage, si) => {
+                const x = leftStart + si * inputStageW;
+                const sidebarId = stage.sidebar === 'input' ? INPUT_SIDEBAR[input] : stage.sidebar;
+                return (
+                  <g
+                    key={stage.key}
+                    style={{ cursor: 'pointer' }}
+                    onClick={() => setActiveSidebar(sidebarId as SidebarId)}
+                  >
+                    <rect
+                      x={x + 3}
+                      y={y - boxH / 2}
+                      width={inputStageW - 6}
+                      height={boxH}
+                      rx={6}
+                      className="signal-flow__stage"
+                    />
+                    <text
+                      x={x + inputStageW / 2}
+                      y={y}
+                      textAnchor="middle"
+                      dominantBaseline="central"
+                      className="signal-flow__stage-label"
+                    >
+                      {si === 0 ? name : stage.label}
+                    </text>
+                  </g>
+                );
+              })}
+            </g>
+          );
+        })}
+
+        {OUTPUT_ORDER.map((output, j) => {
+          const y = outputCenterY(j);
+          const boxH = Math.min(outputRowH * 0.55, 32);
+          const name = dsp.state.current_config.output_states[output].name;
+          const boxes = [
+            ...OUTPUT_STAGES,
+            { key: 'name', label: name, sidebar: 'output' as const },
+          ];
+          return (
+            <g key={output}>
+              {boxes.map((stage, si) => {
+                const x = rightStart + si * outputStageW;
+                const sidebarId =
+                  stage.sidebar === 'output' ? OUTPUT_SIDEBAR[output] : stage.sidebar;
+                const isLast = si === boxes.length - 1;
+                return (
+                  <g
+                    key={stage.key}
+                    style={{ cursor: 'pointer' }}
+                    onClick={() => setActiveSidebar(sidebarId as SidebarId)}
+                  >
+                    <rect
+                      x={x + 3}
+                      y={y - boxH / 2}
+                      width={outputStageW - 6}
+                      height={boxH}
+                      rx={6}
+                      className="signal-flow__stage"
+                    />
+                    <text
+                      x={x + outputStageW / 2}
+                      y={y}
+                      textAnchor="middle"
+                      dominantBaseline="central"
+                      className="signal-flow__stage-label"
+                    >
+                      {isLast ? name : stage.label}
+                    </text>
+                  </g>
+                );
+              })}
+            </g>
+          );
+        })}
+      </svg>
+
+      {gainTooltip.visible && (
+        <div
+          className="signal-flow__gain-tooltip"
+          style={{
+            position: 'fixed',
+            left: gainTooltip.x + 14,
+            top: gainTooltip.y - 28,
+            pointerEvents: 'none',
+            zIndex: 50,
+            padding: '2px 8px',
+            borderRadius: 6,
+            fontSize: 12,
+            fontVariantNumeric: 'tabular-nums',
+            background: 'var(--surface-elevated, rgba(20, 20, 24, 0.92))',
+            color: 'var(--text-primary, #fff)',
+            border: '1px solid var(--border-hairline, #333)',
+            boxShadow: '0 2px 8px rgba(0,0,0,0.35)',
+            whiteSpace: 'nowrap',
+          }}
+        >
+          {gainTooltip.label}
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default SignalFlowMatrix;
@@ -150,6 +150,9 @@
    (var(--space-3) * 2) + (var(--tab-height) * 0.5) + (var(--space-2) * 2) + 4ch +
      var(--tab-close-size)
  );
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .tab:hover {
@@ -1,5 +1,5 @@
 import { useEffect, useRef } from 'react';
-import { DSP, AppPage } from '../../types';
+import { DSP, AppPage, isConnected } from '../../types';
 import AnimatedLogo from '../../assets/icons/AnimatedLogo';
 import { PlusIcon } from '../../assets/icons/PlusIcon';
 import { CrownIcon } from '../../assets/icons/CrownIcon';
@@ -24,6 +24,7 @@ function Tab({
  onRemove,
  onConnect,
  onDisconnect,
+  actions,
 }: {
  dsp: DSP;
  active: boolean;
@@ -33,8 +34,9 @@ function Tab({
  onRemove: () => void;
  onConnect: (dsp: DSP) => void;
  onDisconnect: (dsp: DSP) => void;
+  actions?: React.ReactNode;
 }) {
-  const isConnected = dsp.status === 'connected';
+  const isDspConnected = isConnected(dsp);

  const handleTabKeyDown = (e: React.KeyboardEvent<HTMLDivElement>) => {
    if (e.key === 'Enter' || e.key === ' ') {
@@ -58,24 +60,36 @@ function Tab({
      <button
        type="button"
        className="tab-led"
-        aria-label={isConnected ? `Disconnect ${dsp.name}` : `Connect ${dsp.name}`}
+        aria-label={isDspConnected ? `Disconnect ${dsp.name}` : `Connect ${dsp.name}`}
        onClick={(e) => {
          e.stopPropagation();

-          if (isConnected) {
+          onSelect();
+
+          if (isDspConnected) {
            onDisconnect(dsp);
          } else {
            onConnect(dsp);
          }
        }}
      >
-        <Led status={dsp.status} />
+        <Led
+          status={
+            dsp.isConnecting
+              ? 'connecting'
+              : isConnected(dsp)
+                ? 'connected'
+                : 'disconnected'
+          }
+        />
      </button>

      <span className="tab-name" title={dsp.name}>
        {dsp.name}
      </span>

+      {actions}
+
      <button
        type="button"
        className="tab-close"
@@ -9,6 +9,9 @@
  align-items: center;

  box-sizing: border-box;
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .gauge-track {
@@ -58,8 +61,6 @@
  height: 100%;

  cursor: pointer;
-  touch-action: none;
-  user-select: none;
 }

 .track {
@@ -145,3 +146,26 @@
  font-family: inherit;
  color: inherit;
 }
+
+.gauge-viewport.is-disabled {
+  opacity: 0.45;
+  filter: grayscale(1);
+}
+
+.gauge-viewport.is-disabled .slider {
+  cursor: not-allowed;
+}
+
+.gauge-viewport.is-disabled .thumb {
+  border-color: var(--border-hairline);
+  box-shadow: none;
+}
+
+.gauge-viewport.is-disabled .value {
+  color: var(--border-hairline);
+  box-shadow: none;
+}
+
+.value input:disabled {
+  cursor: not-allowed;
+}
@@ -2,24 +2,45 @@ import { useEffect, useMemo, useRef, useState } from 'react';
 import './VerticalSlider.css';

 type StepFn = (value: number) => number;
+type QuantizeFn = (value: number) => number;
+type Scale = 'linear' | 'log';

 type VerticalSliderProps = {
  min: number;
  max: number;

  step?: StepFn;
+  quantize?: QuantizeFn;
+
+  /**
+   * Optional discrete value set (must be sorted ascending). When provided,
+   * this takes full precedence over `step`/`quantize`/`scale`: the slider
+   * only ever lands on entries from this array. `min`/`max` are used to
+   * slice out the applicable sub-range of `values` (e.g. per-filter-type
+   * Q ranges that all share one master Q table) — both bounds should be
+   * exact members of `values`. Thumb position and drag/keyboard/wheel
+   * navigation are index-based rather than value-based, since spacing in
+   * the array need not be uniform or log-uniform.
+   */
+  values?: readonly number[];

  value: number;
  onChange?: (value: number) => Promise<boolean>;
  onInput?: (value: number) => void;

-  unit?: string;
+  unit?: string | ((value: number) => string);
  formatValue?: (value: number, decimals: number) => string;

  showTicks?: boolean;

+  /** 'linear' (default) or 'log'. Log scale requires min > 0 and max > 0. Ignored when `values` is set. */
+  scale?: Scale;
+
  className?: string;
  style?: React.CSSProperties;
+
+  /** Greys out the slider and blocks all interaction. */
+  disabled?: boolean;
 };

 const defaultStep: StepFn = () => 0.1;
@@ -37,16 +58,126 @@ function getDecimals(n: number) {
  return i === -1 ? 0 : s.length - i - 1;
 }

+// --- scale helpers -----------------------------------------------------
+
+/** Guards against log(0) / log(negative); falls back to a tiny positive epsilon. */
+function safeLogBound(n: number) {
+  return n > 0 ? n : Number.EPSILON;
+}
+
+/** Binary search for the index of the array entry closest to v. Assumes arr is sorted ascending and non-empty. */
+function closestIndex(arr: readonly number[], v: number) {
+  let lo = 0;
+  let hi = arr.length - 1;
+  if (v <= arr[0]) return 0;
+  if (v >= arr[hi]) return hi;
+
+  while (lo < hi) {
+    const mid = (lo + hi) >> 1;
+    if (arr[mid] === v) return mid;
+    if (arr[mid] < v) lo = mid + 1;
+    else hi = mid;
+  }
+
+  const a = arr[lo - 1];
+  const b = arr[lo];
+  return v - a <= b - v ? lo - 1 : lo;
+}
+
+/** Maps a real value to a 0..1 position, honoring the chosen scale (or index position within `list`). */
+function valueToPercent(
+  v: number,
+  min: number,
+  max: number,
+  scale: Scale,
+  list: readonly number[] | null
+) {
+  if (list && list.length > 1) {
+    return closestIndex(list, v) / (list.length - 1);
+  }
+  if (scale === 'log') {
+    const logMin = Math.log(safeLogBound(min));
+    const logMax = Math.log(safeLogBound(max));
+    if (logMax === logMin) return 0;
+    const logV = Math.log(safeLogBound(v));
+    return (logV - logMin) / (logMax - logMin);
+  }
+  if (max === min) return 0;
+  return (v - min) / (max - min);
+}
+
+/** Maps a 0..1 position back to a real value, honoring the chosen scale (or nearest index within `list`). */
+function percentToValue(
+  percent: number,
+  min: number,
+  max: number,
+  scale: Scale,
+  list: readonly number[] | null
+) {
+  if (list && list.length > 1) {
+    const idx = Math.round(percent * (list.length - 1));
+    return list[Math.min(list.length - 1, Math.max(0, idx))];
+  }
+  if (scale === 'log') {
+    const logMin = Math.log(safeLogBound(min));
+    const logMax = Math.log(safeLogBound(max));
+    return Math.exp(logMin + percent * (logMax - logMin));
+  }
+  return min + percent * (max - min);
+}
+
+/**
+ * Builds a StepFn that yields roughly `points` evenly-spaced steps between
+ * `min` and `max` on a logarithmic scale — e.g. makeLogStep(19.7, 20160, 300)
+ * gives ~300 points across a 20 Hz - 20 kHz range, with step size growing
+ * proportionally to the current value (fine resolution at low frequencies,
+ * coarser at high ones — matches how the ear perceives frequency).
+ *
+ * This is an approximation used to size keyboard/wheel nudges — it does NOT
+ * guarantee landing on the same exact grid a real device would produce.
+ * Pair it with `quantize` (see makeLogQuantize) when you need the slider to
+ * always land exactly on the device's own value set.
+ */
+export function makeLogStep(min: number, max: number, points: number): StepFn {
+  const ratio = Math.pow(max / min, 1 / Math.max(1, points));
+  const stepSize = ratio - 1;
+  return (value: number) => Math.max(min, value) * stepSize;
+}
+
+/**
+ * Builds a QuantizeFn that snaps to the exact same log-spaced grid a device
+ * using a `raw` 0..points index would produce, e.g. for a frequency raw
+ * value stored as:
+ *   raw = round(log(Hz / min) / log(max / min) * points)
+ *   Hz  = min * (max / min) ** (raw / points)
+ * makeLogQuantize(19.7, 20160, 300) reproduces exactly that 301-point set
+ * (raw 0..300), so the slider only ever settles on values the device itself
+ * would encode/decode to — no drift from an approximate step size.
+ */
+export function makeLogQuantize(min: number, max: number, points: number): QuantizeFn {
+  const logRatio = Math.log(max / min);
+  return (value: number) => {
+    const v = Math.max(min, Math.min(max, value));
+    const raw = Math.round((Math.log(v / min) / logRatio) * points);
+    const clampedRaw = Math.min(points, Math.max(0, raw));
+    return min * Math.pow(max / min, clampedRaw / points);
+  };
+}
+
 export default function VerticalSlider({
  min,
  max,
  step = defaultStep,
+  quantize,
+  values,
  value,
  onChange,
  onInput,
  unit = '',
  formatValue,
  showTicks = true,
+  scale = 'linear',
+  disabled = false,
  className,
  style,
 }: VerticalSliderProps) {
@@ -60,10 +191,33 @@ export default function VerticalSlider({
  const dragging = useRef(false);
  const thumbRef = useRef<HTMLDivElement>(null);
  const keyboardEditing = useRef(false);
+  const wheelValue = useRef<number | null>(null);
+  const wheelEditing = useRef(false);
+  const wheelCommitTimeout = useRef<ReturnType<typeof setTimeout> | null>(null);
  const [tickCount, setTickCount] = useState(MIN_TICKS);

+  if (scale === 'log' && !values && (min <= 0 || max <= 0)) {
+    // eslint-disable-next-line no-console
+    console.warn(
+      'VerticalSlider: scale="log" requires min > 0 and max > 0. Falling back to linear behavior for out-of-range bounds.'
+    );
+  }
+
+  // Slice the discrete value set down to the applicable [min, max] sub-range.
+  // Falls back to the full array if the slice is empty (e.g. misconfigured bounds).
+  const listValues = useMemo(() => {
+    if (!values || values.length === 0) return null;
+    const filtered = values.filter((v) => v >= min && v <= max);
+    return filtered.length > 0 ? filtered : values;
+  }, [values, min, max]);
+
  useEffect(() => {
-    if (dragging.current || keyboardEditing.current || editingText !== null) {
+    if (
+      dragging.current ||
+      keyboardEditing.current ||
+      wheelEditing.current ||
+      editingText !== null
+    ) {
      return;
    }
    setDisplayValue(value);
@@ -90,15 +244,46 @@ export default function VerticalSlider({
    return () => observer.disconnect();
  }, []);

-  const decimals = useMemo(
-    () => Math.min(3, getDecimals(step(displayValue))),
-    [step, displayValue]
-  );
+  useEffect(() => {
+    if (!disabled) return;
+
+    dragging.current = false;
+    keyboardEditing.current = false;
+    keyboardValue.current = null;
+    wheelEditing.current = false;
+    wheelValue.current = null;
+    if (wheelCommitTimeout.current) {
+      clearTimeout(wheelCommitTimeout.current);
+      wheelCommitTimeout.current = null;
+    }
+
+    setEditingText(null);
+    setDisplayValue(value);
+    dragValue.current = value;
+    onInput?.(value);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [disabled]);
+
+  const decimals = useMemo(() => {
+    if (listValues) return Math.min(3, getDecimals(displayValue));
+    return Math.min(3, getDecimals(step(displayValue)));
+  }, [listValues, step, displayValue]);

  const formattedValue = (formatValue ?? formatValueDefault)(displayValue, decimals);

+  const displayUnit = typeof unit === 'function' ? unit(displayValue) : unit;
+
  function normalizeValue(input: number) {
    const clamped = Math.min(max, Math.max(min, input));
+
+    if (listValues) {
+      return listValues[closestIndex(listValues, clamped)];
+    }
+
+    if (quantize) {
+      return Number(Math.min(max, Math.max(min, quantize(clamped))).toFixed(6));
+    }
+
    const currentStep = step(clamped);
    const snapped = min + Math.round((clamped - min) / currentStep) * currentStep;
    return Number(Math.min(max, Math.max(min, snapped)).toFixed(6));
@@ -112,6 +297,8 @@ export default function VerticalSlider({
  }

  function handleKeyDown(e: React.KeyboardEvent<HTMLDivElement>) {
+    if (disabled) return;
+
    if (!['ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(e.key)) {
      return;
    }
@@ -119,19 +306,35 @@ export default function VerticalSlider({
    keyboardEditing.current = true;
    e.preventDefault();

-    const base = keyboardValue.current ?? value;
-    const currentStep = step(base);
+    // Base off displayValue (our own last-known-good local state), not the
+    // `value` prop: if onChange's round trip through the parent/audio engine
+    // hasn't landed yet, `value` can still be stale, which made repeated
+    // key presses appear to snap back to the pre-press position.
+    const base = keyboardValue.current ?? displayValue;

-    let next = base;
+    let next: number;
+    if (listValues) {
+      const idx = closestIndex(listValues, base);
+      let nextIdx = idx;
+      if (e.key === 'ArrowUp' || e.key === 'ArrowRight')
+        nextIdx = Math.min(listValues.length - 1, idx + 1);
+      if (e.key === 'ArrowDown' || e.key === 'ArrowLeft') nextIdx = Math.max(0, idx - 1);
+      next = listValues[nextIdx];
+    } else {
+      const currentStep = step(base);
+      next = base;
      if (e.key === 'ArrowUp' || e.key === 'ArrowRight') next += currentStep;
      if (e.key === 'ArrowDown' || e.key === 'ArrowLeft') next -= currentStep;
-
      next = normalizeValue(next);
+    }
+
    keyboardValue.current = next;
    updateValue(next);
  }

  async function handleKeyUp() {
+    if (disabled) return;
+
    if (keyboardValue.current == null) return;

    const next = keyboardValue.current;
@@ -147,15 +350,80 @@ export default function VerticalSlider({
    }
  }

+  function handleWheel(e: WheelEvent) {
+    if (disabled) return;
+    e.preventDefault();
+
+    wheelEditing.current = true;
+
+    const base = wheelValue.current ?? displayValue;
+    // deltaY < 0 means scrolling up/away from the user — treat that as
+    // increasing the value, matching the vertical slider's "up = more".
+    const direction = e.deltaY < 0 ? 1 : -1;
+
+    let next: number;
+    if (listValues) {
+      const idx = closestIndex(listValues, base);
+      const nextIdx = Math.min(listValues.length - 1, Math.max(0, idx + direction));
+      next = listValues[nextIdx];
+    } else {
+      const currentStep = step(base);
+      next = normalizeValue(base + direction * currentStep);
+    }
+
+    wheelValue.current = next;
+    updateValue(next);
+
+    if (wheelCommitTimeout.current) clearTimeout(wheelCommitTimeout.current);
+    wheelCommitTimeout.current = setTimeout(() => {
+      void commitWheel();
+    }, 250);
+  }
+
+  async function commitWheel() {
+    if (wheelValue.current == null) return;
+
+    const next = wheelValue.current;
+    const success = await onChange?.(next);
+
+    wheelEditing.current = false;
+    wheelValue.current = null;
+
+    if (success === false) {
+      setDisplayValue(value);
+      dragValue.current = value;
+      onInput?.(value);
+    }
+  }
+
+  useEffect(() => {
+    const el = sliderRef.current;
+    if (!el) return;
+
+    // React attaches onWheel passively by default, so preventDefault()
+    // wouldn't stop the page from scrolling underneath the slider — attach
+    // natively with { passive: false } instead.
+    el.addEventListener('wheel', handleWheel, { passive: false });
+    return () => el.removeEventListener('wheel', handleWheel);
+  });
+
+  useEffect(() => {
+    return () => {
+      if (wheelCommitTimeout.current) clearTimeout(wheelCommitTimeout.current);
+    };
+  }, []);
+
  function valueFromPointer(clientY: number) {
    if (!sliderRef.current) return;
    const rect = sliderRef.current.getBoundingClientRect();
    const percent = 1 - (clientY - rect.top) / rect.height;
-    const raw = min + percent * (max - min);
+    const raw = percentToValue(percent, min, max, scale, listValues);
    updateValue(raw);
  }

  function startDrag(e: React.PointerEvent<HTMLDivElement>) {
+    if (disabled) return;
+
    const target = e.currentTarget;
    dragging.current = true;
    target.setPointerCapture(e.pointerId);
@@ -170,7 +438,10 @@ export default function VerticalSlider({
  async function endDrag(e: React.PointerEvent<HTMLDivElement>) {
    if (!dragging.current) return;

+    const target = e.currentTarget;
+    const pointerId = e.pointerId;
    const finalValue = dragValue.current;
+
    const success = await onChange?.(finalValue);

    dragging.current = false;
@@ -181,12 +452,17 @@ export default function VerticalSlider({
      onInput?.(value);
    }

-    if (e.currentTarget.hasPointerCapture(e.pointerId)) {
-      e.currentTarget.releasePointerCapture(e.pointerId);
+    if (target.hasPointerCapture(pointerId)) {
+      target.releasePointerCapture(pointerId);
    }
  }

  async function commitEditing() {
+    if (disabled) {
+      setEditingText(null);
+      return;
+    }
+
    if (editingText !== null && editingText !== '' && editingText !== '-') {
      const parsed = Number(editingText);

@@ -209,10 +485,13 @@ export default function VerticalSlider({
    setEditingText(null);
  }

-  const percent = (displayValue - min) / (max - min);
+  const percent = valueToPercent(displayValue, min, max, scale, listValues);

  return (
-    <div className={['gauge-viewport', className].filter(Boolean).join(' ')} style={style}>
+    <div
+      className={['gauge-viewport', disabled && 'is-disabled', className].filter(Boolean).join(' ')}
+      style={style}
+    >
      <div
        className={['gauge-track', !showTicks && 'no-ticks'].filter(Boolean).join(' ')}
        ref={trackRef}
@@ -228,7 +507,12 @@ export default function VerticalSlider({
        <div
          className="slider"
          ref={sliderRef}
-          tabIndex={0}
+          role="slider"
+          aria-disabled={disabled}
+          aria-valuemin={min}
+          aria-valuemax={max}
+          aria-valuenow={displayValue}
+          tabIndex={disabled ? -1 : 0}
          onKeyDown={handleKeyDown}
          onKeyUp={handleKeyUp}
          onPointerDown={startDrag}
@@ -254,6 +538,7 @@ export default function VerticalSlider({
          ref={inputRef}
          type="text"
          inputMode="decimal"
+          disabled={disabled}
          value={editingText ?? formattedValue}
          style={{ width: '100%' }}
          onFocus={() => setEditingText(value.toFixed(decimals))} // plain number while editing
@@ -267,7 +552,7 @@ export default function VerticalSlider({
            }
          }}
        />
-        {unit && <span className="value-unit">{unit}</span>}
+        {displayUnit && <span className="value-unit">{' ' + displayUnit}</span>}
      </div>
    </div>
  );
@@ -1,5 +1,5 @@
 /* InputSection.css */
-.input-graph-section {
+.channel-graph-section {
  flex: 0 0 calc(100% - var(--dsp-control-heigth));
  min-height: 0;

@@ -10,9 +10,13 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

-.input-graph-panel {
+.channel-graph-panel {
+  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
@@ -24,7 +28,28 @@
  border-radius: var(--radius-md);
 }

-.input-graph__title {
+.channel-bypass-overlay {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  pointer-events: none;
+  z-index: 2;
+}
+
+.channel-bypass-overlay span {
+  font-size: 8cqh;
+  font-weight: 800;
+  letter-spacing: 0.15em;
+  color: #f87171;
+  text-shadow: 0 0 12px rgba(0, 0, 0, 0.6);
+  transform: rotate(-8deg);
+  opacity: 0.85;
+  user-select: none;
+}
+
+.channel-graph__title {
  flex: 0 0 auto;

  text-align: center;
@@ -35,12 +60,15 @@
  font-weight: var(--font-weight-semibold);
 }

-.input-graph-panel > .container {
+.channel-graph-panel > .container {
  flex: 1;
  min-height: 0;
 }

-.input-control-section {
+/* Bottom control bar — same pattern as .compressor-section: absolute,
+   bottom-anchored, panels flow in a row and scroll horizontally instead
+   of squeezing into a fixed max-width. */
+.channel-control-section {
  container-type: size;
  position: absolute;
  left: 0;
@@ -50,7 +78,7 @@
  height: var(--dsp-control-heigth);

  display: flex;
-  align-items: center;
+  align-items: flex-end;
  justify-content: center;

  box-sizing: border-box;
@@ -60,109 +88,29 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

-.input-control-panel {
+.channel-control-panel {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  width: 100%;
-  max-width: 60cqw;
-
-  display: flex;
-  align-items: stretch;
-  gap: var(--space-4);
+  gap: var(--space-2);
+  overflow-x: auto;
+  justify-content: center;

  box-sizing: border-box;
  padding: 2cqh;
 }

-.input-control-panel__sliders {
-  flex: 1 1 auto;
-  min-width: 0;
-
-  display: grid;
-  grid-template-columns: repeat(2, 1fr);
-  gap: 4cqh;
-}
-
-.input-control-panel__cell {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: flex-start;
-  min-height: 0;
-  min-width: 0;
-  gap: 1cqh;
-}
-
-.input-control-panel__cell-label {
-  flex: 0 0 auto;
-  font-family: var(--font-ui);
-  font-size: 2.5cqh;
-  color: var(--text-muted);
-  white-space: nowrap;
-}
-
-.input-control-panel__side {
-  flex: 0 0 auto;
-  width: 16cqh;
-
-  display: flex;
-  flex-direction: column;
-  justify-content: flex-end;
-  gap: 2cqh;
-}
-
-.input-control-panel__select {
-  display: flex;
-  flex-direction: column;
-  gap: 0.5cqh;
-}
-
-.input-control-panel__select-label {
-  font-family: var(--font-ui);
-  font-size: 2.2cqh;
-  color: var(--text-muted);
-}
-
-.input-control-panel__select select {
-  font-family: var(--font-ui);
-  font-size: 2.5cqh;
-  padding: 0.8cqh;
-  background: var(--bg-void);
-  color: var(--text-primary);
-  border: var(--border-width) solid var(--border-hairline);
-  border-radius: var(--radius-md);
-}
-
-.input-control-panel__select select:disabled {
-  opacity: 0.5;
-}
-
-.input-control-panel__bypass-btn {
-  font-family: var(--font-ui);
-  font-size: 2.5cqh;
-  font-weight: var(--font-weight-semibold);
-  padding: 1cqh;
-
-  background: var(--bg-void);
-  color: var(--text-primary);
-  border: var(--border-width) solid var(--border-hairline);
-  border-radius: var(--radius-md);
-  cursor: pointer;
-}
-
-.input-control-panel__bypass-btn--active {
-  background: var(--accent, #f87171);
-  color: var(--bg-void);
-  border-color: var(--accent, #f87171);
-}
-
 /* Peq Sliders */
-.input-panel {
+.channel-panel {
  position: relative;
-  height: 10;
+  height: 100%;

-  aspect-ratio: 0.75;
+  aspect-ratio: 0.8;
  flex: 0 0 auto;

  display: flex;
@@ -176,7 +124,7 @@
  background: var(--bg-void);
 }

-.input-panel__title {
+.channel-panel__title {
  flex: 0 0 auto;
  width: 100%;
  text-align: center;
@@ -192,7 +140,7 @@
  text-overflow: ellipsis;
 }

-.input-panel__grid {
+.channel-panel__grid {
  flex: 1 1 auto;
  min-height: 0;

@@ -206,7 +154,7 @@
  box-sizing: border-box;
 }

-.input-panel__cell {
+.channel-panel__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
@@ -216,10 +164,10 @@
  gap: 1cqh;
 }

-.input-panel__cell-label {
+.channel-panel__cell-label {
  flex: 0 0 auto;
  font-family: var(--font-ui);
-  font-size: 2.5cqh;
+  font-size: 3.2cqh;
  color: var(--text-muted);
  white-space: nowrap;
 }
@@ -227,7 +175,7 @@
 .crossover-panel {
  position: relative;
  height: 100%;
-  aspect-ratio: 0.28;
+  aspect-ratio: 0.3;
  flex: 0 0 auto;

  display: flex;
@@ -259,84 +207,193 @@
  text-overflow: ellipsis;
 }

+/* Now the root of a ChoiceSelect rather than a native <select>. */
 .crossover-panel__select {
  flex: 0 0 auto;
  width: 85%;
  font-family: var(--font-ui);
-  font-size: 3cqh;
-  padding: 1cqh;
-  background: var(--bg-panel);
-  color: inherit;
-  border: var(--border-width) solid var(--border-hairline);
+}
+
+.crossover-panel__select .choice-select__input,
+.crossover-panel__select .choice-select__input option {
+  font-size: 4cqh;
+  color: var(--accent-brand);
+  /* padding-left: 1cqh; */
+}
+
+.crossover-panel__select {
+  flex: 0 0 auto;
+  width: 85%;
+  font-family: var(--font-ui);
+  font-size: 4cqh;
+}
+
+.crossover-panel__select .choice-select__input,
+.crossover-panel__select .choice-select__input option {
+  height: 100%;
+  padding: 0;
+  padding-left: 2cqh;
+  font-size: 4cqh;
+  color: var(--accent-brand);
  border-radius: var(--radius-sm);
 }

-.gain-meter-panel {
-  container-type: size;
-
-  position: relative;
-  height: 100%;
-  aspect-ratio: 1 / 2;
-  flex: 0 0 auto;
+.peq-band-list {
+  flex: 1 1 auto;
+  min-width: 0;
+  min-height: 0;

  display: flex;
  flex-direction: column;
-  align-items: center;
+  gap: 1.5cqh;

  border: var(--border-width) solid var(--border-hairline);
  border-radius: var(--radius-md);
  box-sizing: border-box;
  background: var(--bg-void);
+  padding: 1cqh;
+
+  overflow: hidden;
 }

-.gain-meter-panel__title {
+.peq-band-list__row {
+  flex: 1 1 auto;
+
+  min-height: 0;
+  min-width: 0;
+
+  display: grid;
+  grid-template-columns: 0.4fr 0.55fr 0.4fr 0.5fr 1.2fr 0.5fr;
+  align-items: stretch;
+  gap: 1cqh;
+
+  box-sizing: border-box;
+}
+
+.peq-band-list__row--header {
  flex: 0 0 auto;
-  width: 100%;
-  text-align: center;
+
  font-family: var(--font-ui);
  font-size: 4cqh;
+  color: var(--text-primary);
+  text-align: center;
  font-weight: var(--font-weight-semibold);
-  padding-top: 2cqh;
-  padding-bottom: 2cqh;
+
  border-bottom: var(--border-width) solid var(--border-hairline);

+  padding-top: 1cqh;
+  padding-bottom: 1cqh;
+
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
 }

-.gain-meter-panel__grid {
-  flex: 1 1 auto;
-  min-height: 0;
-  width: 100%;
-  padding: 2cqh;
-  box-sizing: border-box;
-
-  display: grid;
-  grid-template-columns: 1fr 1fr;
-  /* slider/meter row gets the bulk of the height, button row stays compact */
-  grid-template-rows: 1fr auto;
-  gap: 1.5cqh;
+.peq-band-list__row--active {
+  background: var(--bg-panel);
+  border-radius: var(--radius-sm);
 }

-.gain-meter-panel__cell {
+.peq-band-list__cell {
  min-width: 0;
  min-height: 0;
+
+  display: flex;
+  align-items: stretch;
+  justify-content: center;
+
+  text-align: center;
+}
+
+.peq-band-list__input {
+  width: 100%;
+  height: 100%;
+  min-width: 0;
+  min-height: 0;
+
+  font-family: var(--font-ui);
+  font-size: 2.2cqh;
+  padding: 0.5cqh;
+
+  text-align: center;
+
+  background: var(--bg-panel);
+  color: var(--text-primary);
+
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+
+  box-sizing: border-box;
+}
+
+.peq-band-list__stepper,
+.peq-band-list__select {
+  width: 100%;
+  height: 100%;
+  min-width: 0;
+  min-height: 0;
+
+  font-family: var(--font-ui);
+  font-size: 4cqh;
+}
+
+.channel-graph-panel__magnitude-wrap {
+  flex: 1 1 0;
+  min-height: 0;
+  min-width: 0;
+  position: relative;
+}
+
+.channel-graph__title-row {
+  flex: 0 0 auto;
  display: flex;
  align-items: center;
-  justify-content: center;
+  justify-content: space-between;
+  padding: 1cqh 1.5cqh;
 }

-.gain-meter-panel__cell--slider,
-.gain-meter-panel__cell--meter {
+.channel-graph__title-row .channel-graph__title {
+  padding: 0; /* was on the standalone title element; row now owns spacing */
+}
+
+.channel-graph-view-toggle {
+  display: flex;
+  gap: 0.4cqh;
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+  padding: 0.3cqh;
+  background: var(--bg-void);
+}
+
+.channel-graph-view-toggle__btn {
+  font-family: var(--font-ui);
+  font-size: 2cqh;
+  padding: 0.6cqh 1.2cqh;
+  background: transparent;
+  color: var(--text-muted);
+  border: none;
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+}
+
+.channel-graph-view-toggle__btn.active {
+  background: var(--accent-brand);
+  color: var(--bg-void);
+}
+
+.peq-band-list__stepper .choice-stepper__input,
+.peq-band-list__select .choice-select__input {
  height: 100%;
-}
+  min-height: 0;

-.gain-meter-panel__cell--btn {
-  flex: 0 0 auto;
-}
+  font-family: var(--font-mono);
+  font-size: 4cqh;
+  color: var(--accent-brand);

-.gain-meter-panel__cell--meter {
-  align-items: stretch;
-  justify-content: stretch;
+  background: transparent;
+
+  text-align: center;
+  text-align-last: center;
+  padding: 0;
+  margin: 0;
 }
@@ -0,0 +1,748 @@
+// ChannelSection.tsx
+import VerticalSlider, {
+  makeLogStep,
+  makeLogQuantize,
+} from '../../../../components/VerticalSlider/VerticalSlider';
+import ChoiceStepper from '../../../../components/ChoiceStepper/ChoiceStepper';
+import ChoiceSelect from '../../../../components/ChoiceSelect/ChoiceSelect';
+import {
+  CROSSOVER_FILTER_LABEL,
+  PEQ_BANDS_ORDER,
+  PEQ_FILTERS_LABEL,
+  PEQ_Q_RANGES,
+  PEAK_Q_VALUES,
+  PEQ_Q_UNUSED,
+  PEQ_GAIN_USED,
+} from '../../constants';
+import { Channel, PEQBand, PEQFilter, PEQ, Crossover } from '../../types';
+import { DSP408 as DSP } from '../../../../types';
+import { CrossoverFilter } from '../../types';
+import { LinearGraph, LinearGraphHandle } from '../../../../components/LinearGraph/LinearGraph';
+import { useRef, useState, useEffect } from 'react';
+import './ChannelSection.css';
+import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
+import Button from '../../../../components/Button/Button';
+import {
+  FREQUENCY_MAX,
+  FREQUENCY_MIN,
+  FREQUENCY_QUANTIZATION,
+  GRAPH_X_MAX,
+  GRAPH_X_MIN,
+  GRAPH_Y_MAX,
+  GRAPH_Y_MIN,
+} from '../../constants';
+import { drawCurves } from '../../utils/graph/draw';
+import { getPeqCurvePoints, getPeqPhasePoints } from '../../utils/graph/peq';
+import { logSpace, sumCurvePoints, sumPhaseCurvePoints } from '../../utils/graph/curve';
+import { getCrossoverCurvePoints, getCrossoverPhasePoints } from '../../utils/graph/crossover';
+
+type GraphView = 'both' | 'magnitude' | 'phase';
+
+function GraphViewToggle({
+  view,
+  onChange,
+}: {
+  view: GraphView;
+  onChange: (v: GraphView) => void;
+}) {
+  const options: { value: GraphView; label: string }[] = [
+    { value: 'both', label: 'Both' },
+    { value: 'magnitude', label: 'Mag' },
+    { value: 'phase', label: 'Phase' },
+  ];
+
+  return (
+    <div className="channel-graph-view-toggle">
+      {options.map((opt) => (
+        <button
+          key={opt.value}
+          type="button"
+          className={`channel-graph-view-toggle__btn${view === opt.value ? ' active' : ''}`}
+          onClick={() => onChange(opt.value)}
+        >
+          {opt.label}
+        </button>
+      ))}
+    </div>
+  );
+}
+
+function ChannelActions({
+  bypass,
+  resetting,
+  onBypass,
+  onReset,
+}: {
+  bypass: boolean;
+  resetting: boolean;
+  onBypass: () => void;
+  onReset: () => void;
+}) {
+  return (
+    <div className="geq-channel-selector">
+      <Button
+        variant="toggle"
+        className={bypass ? 'active-warning' : ''}
+        onClick={onBypass}
+        style={{
+          width: '100%',
+          fontSize: '3.5cqh',
+          paddingTop: '2cqh',
+          paddingBottom: '2cqh',
+          minHeight: 0,
+          whiteSpace: 'nowrap',
+        }}
+      >
+        {bypass ? 'Bypassed' : 'Bypass'}
+      </Button>
+
+      <Button
+        variant="toggle"
+        onClick={onReset}
+        disabled={resetting}
+        style={{
+          width: '100%',
+          fontSize: '3.5cqh',
+          paddingTop: '2cqh',
+          paddingBottom: '2cqh',
+          minHeight: 0,
+        }}
+      >
+        {resetting ? 'Resetting…' : 'Reset'}
+      </Button>
+    </div>
+  );
+}
+
+function PeqPanelSliders({
+  peq,
+  setPEQ,
+  onLiveValue,
+}: {
+  peq: PEQ;
+  setPEQ: (
+    gainDb: number,
+    freqHz: number,
+    q: number,
+    filterType: PEQFilter,
+    bypass: boolean
+  ) => Promise<boolean>;
+  onLiveValue: (value: PEQ) => void;
+}) {
+  const [qMin, qMax] = PEQ_Q_RANGES[peq.filter_type];
+  const qDisabled = PEQ_Q_UNUSED.has(peq.filter_type);
+  const gainDisabled = !PEQ_GAIN_USED.has(peq.filter_type);
+
+  const commit = (overrides: Partial<PEQ>) => {
+    const next = { ...peq, ...overrides };
+    return setPEQ(next.gain, next.frequency, next.q, next.filter_type, next.bypass);
+  };
+
+  return (
+    <div className="channel-panel">
+      <div className="channel-panel__title">PEQ Parameters</div>
+
+      <div className="channel-panel__grid">
+        <div className="channel-panel__cell channel-panel__cell--frequency">
+          <VerticalSlider
+            min={FREQUENCY_MIN}
+            max={FREQUENCY_MAX}
+            scale="log"
+            step={makeLogStep(FREQUENCY_MIN, FREQUENCY_MAX, FREQUENCY_QUANTIZATION)}
+            quantize={makeLogQuantize(FREQUENCY_MIN, FREQUENCY_MAX, FREQUENCY_QUANTIZATION)}
+            unit={(value) => (value >= 1000 ? 'kHz' : 'Hz')}
+            formatValue={(value) =>
+              value >= 1000 ? `${(value / 1000).toFixed(2)}` : `${value.toFixed(1)}`
+            }
+            value={peq.frequency}
+            onChange={(value) => commit({ frequency: value })}
+            onInput={(value) => onLiveValue({ ...peq, frequency: value })}
+            style={{ width: '100%', flex: '1 1 auto' }}
+          />
+
+          <div className="channel-panel__cell-label">Frequency</div>
+        </div>
+
+        <div className="channel-panel__cell channel-panel__cell--q">
+          <VerticalSlider
+            min={qMin}
+            max={qMax}
+            values={PEAK_Q_VALUES}
+            formatValue={(v) => v.toFixed(2)}
+            value={peq.q}
+            onChange={(value) => commit({ q: value })}
+            onInput={(value) => onLiveValue({ ...peq, q: value })}
+            disabled={qDisabled}
+            style={{ width: '100%', flex: '1 1 auto' }}
+          />
+
+          <div className="channel-panel__cell-label">Q</div>
+        </div>
+
+        <div className="channel-panel__cell channel-panel__cell--gain">
+          <VerticalSlider
+            min={-12}
+            max={12}
+            step={() => 0.1}
+            unit="dB"
+            value={peq.gain}
+            formatValue={(v, d) => (v > 0 ? `+${v.toFixed(d)}` : v.toFixed(d))}
+            onChange={(value) => commit({ gain: value })}
+            onInput={(value) => onLiveValue({ ...peq, gain: value })}
+            disabled={gainDisabled}
+            style={{ width: '100%', flex: '1 1 auto' }}
+          />
+
+          <div className="channel-panel__cell-label">Gain</div>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function CrossoverPanel({
+  crossover,
+  title,
+  setCrossover,
+  onLiveValue,
+}: {
+  crossover: Crossover;
+  title: string;
+  setCrossover: (frequency: number, filter_type: CrossoverFilter) => Promise<boolean>;
+  onLiveValue: (value: number) => void;
+}) {
+  const frequency = crossover.frequency;
+  const filter_type = crossover.slope;
+  const bypass = filter_type === CrossoverFilter.Bypass;
+
+  const lastFilterType = useRef<CrossoverFilter>(
+    filter_type !== CrossoverFilter.Bypass ? filter_type : CrossoverFilter.Lk48
+  );
+
+  const commit = async (overrides: {
+    frequency?: number;
+    filter_type?: CrossoverFilter;
+    bypass?: boolean;
+  }) => {
+    const nextFrequency = overrides.frequency ?? frequency;
+
+    const selectedFilterType =
+      overrides.filter_type !== undefined
+        ? overrides.filter_type
+        : bypass
+          ? lastFilterType.current
+          : filter_type;
+
+    // Always remember the latest non-bypass selection.
+    if (selectedFilterType !== CrossoverFilter.Bypass) {
+      lastFilterType.current = selectedFilterType;
+    }
+
+    const nextBypass = overrides.bypass ?? bypass;
+
+    const nextFilterType = nextBypass ? CrossoverFilter.Bypass : selectedFilterType;
+
+    return setCrossover(nextFrequency, nextFilterType);
+  };
+
+  return (
+    <div className="crossover-panel">
+      <div className="crossover-panel__title">{title}</div>
+
+      <VerticalSlider
+        min={FREQUENCY_MIN}
+        max={FREQUENCY_MAX}
+        scale="log"
+        step={makeLogStep(FREQUENCY_MIN, FREQUENCY_MAX, FREQUENCY_QUANTIZATION)}
+        quantize={makeLogQuantize(FREQUENCY_MIN, FREQUENCY_MAX, FREQUENCY_QUANTIZATION)}
+        unit={(value) => (value >= 1000 ? 'kHz' : 'Hz')}
+        value={frequency}
+        formatValue={(value) =>
+          value >= 1000 ? `${(value / 1000).toFixed(2)}` : `${value.toFixed(1)}`
+        }
+        onChange={(value) => commit({ frequency: value })}
+        onInput={(value) => onLiveValue(value)}
+        style={{ width: '100%', flex: '1 1 auto' }}
+      />
+
+      <ChoiceSelect
+        className="crossover-panel__select"
+        value={bypass ? lastFilterType.current : filter_type}
+        options={CROSSOVER_FILTER_LABEL.map((opt) => opt.value)}
+        formatLabel={(v) =>
+          CROSSOVER_FILTER_LABEL.find((opt) => opt.value === v)?.label ?? String(v)
+        }
+        onChange={(value) => commit({ filter_type: value })}
+      />
+
+      <Button
+        variant="toggle"
+        className={bypass ? 'active-warning' : ''}
+        onClick={() => commit({ bypass: !bypass })}
+        style={{
+          width: '85%',
+          paddingLeft: 0,
+          paddingRight: 0,
+          fontSize: '4cqh',
+          paddingTop: '2cqh',
+          paddingBottom: '2cqh',
+          minHeight: 0,
+        }}
+      >
+        {bypass ? 'Bypassed' : 'Bypass'}
+      </Button>
+    </div>
+  );
+}
+
+function PeqBandList({
+  bands,
+  liveBands,
+  activeBand,
+  setActiveBand,
+  setPEQ,
+  bandsOrder,
+}: {
+  bands: Record<PEQBand, PEQ>;
+  liveBands: Partial<Record<PEQBand, PEQ>>;
+  activeBand: PEQBand;
+  setActiveBand: (band: PEQBand) => void;
+  setPEQ: (
+    band: PEQBand,
+    gainDb: number,
+    freqHz: number,
+    q: number,
+    filterType: PEQFilter,
+    bypass: boolean
+  ) => Promise<boolean>;
+  bandsOrder: PEQBand[];
+}) {
+  const commit = (band: PEQBand, overrides: Partial<PEQ>) => {
+    const peq = liveBands[band] ?? bands[band];
+    const next = { ...peq, ...overrides };
+    return setPEQ(band, next.gain, next.frequency, next.q, next.filter_type, next.bypass);
+  };
+
+  return (
+    <div className="peq-band-list">
+      <div className="peq-band-list__row peq-band-list__row--header">
+        <div className="peq-band-list__cell">Band</div>
+        <div className="peq-band-list__cell">Freq</div>
+        <div className="peq-band-list__cell">Q</div>
+        <div className="peq-band-list__cell">Gain</div>
+        <div className="peq-band-list__cell">Type</div>
+        <div className="peq-band-list__cell">Bypass</div>
+      </div>
+
+      {bandsOrder.map((band, i) => {
+        const peq = liveBands[band] ?? bands[band];
+        const isActive = band === activeBand;
+
+        const [qMin, qMax] = PEQ_Q_RANGES[peq.filter_type];
+        const qValues = PEAK_Q_VALUES.filter((q) => q >= qMin && q <= qMax);
+
+        const qDisabled = PEQ_Q_UNUSED.has(peq.filter_type);
+        const gainDisabled = !PEQ_GAIN_USED.has(peq.filter_type);
+
+        return (
+          <div
+            className={`peq-band-list__row${isActive ? ' peq-band-list__row--active' : ''}`}
+            key={band}
+          >
+            <Button
+              variant="toggle"
+              className={isActive ? 'active-info' : ''}
+              onClick={() => setActiveBand(band)}
+              style={{
+                minHeight: 0,
+                fontSize: '4cqh',
+              }}
+            >
+              {`B${i + 1}`}
+            </Button>
+
+            {/* Frequency */}
+            <ChoiceStepper
+              className="peq-band-list__stepper"
+              value={peq.frequency}
+              min={FREQUENCY_MIN}
+              max={FREQUENCY_MAX}
+              step={FREQUENCY_QUANTIZATION}
+              formatLabel={(v) =>
+                v >= 1000 ? `${(v / 1000).toFixed(2)} kHz` : `${v.toFixed(1)} Hz`
+              }
+              onChange={(value) => commit(band, { frequency: value })}
+            />
+
+            <ChoiceStepper
+              className="peq-band-list__stepper"
+              value={peq.q}
+              values={qValues}
+              formatLabel={(v) => v.toFixed(2)}
+              disabled={qDisabled}
+              onChange={(value) => commit(band, { q: value })}
+            />
+
+            <ChoiceStepper
+              className="peq-band-list__stepper"
+              value={peq.gain}
+              min={-12}
+              max={12}
+              step={0.1}
+              formatLabel={(v) => `${v > 0 ? '+' : ''}${v.toFixed(1)} dB`}
+              disabled={gainDisabled}
+              onChange={(value) => commit(band, { gain: value })}
+            />
+
+            <ChoiceSelect<PEQFilter>
+              className="peq-band-list__select"
+              value={peq.filter_type}
+              options={PEQ_FILTERS_LABEL.map((opt) => opt.value)}
+              formatLabel={(v) =>
+                PEQ_FILTERS_LABEL.find((opt) => opt.value === v)?.label ?? String(v)
+              }
+              onChange={(value) => commit(band, { filter_type: value, q: 3.0 })}
+            />
+
+            <Button
+              variant="toggle"
+              className={peq.bypass ? 'active-warning' : ''}
+              onClick={() => commit(band, { bypass: !peq.bypass })}
+              style={{ minHeight: 0, fontSize: '4cqh', paddingInline: 0 }}
+            >
+              {peq.bypass ? 'Bypassed' : 'Bypass'}
+            </Button>
+          </div>
+        );
+      })}
+    </div>
+  );
+}
+
+type SetFilterFn = (
+  channel: Channel,
+  freq: number,
+  filterType: CrossoverFilter
+) => Promise<boolean>;
+
+function ChannelSection({
+  dsp,
+  channel,
+  setHighPass,
+  setLowPass,
+  setPeq,
+  setPeqBypass,
+}: {
+  dsp: DSP;
+  channel: Channel;
+  setHighPass: SetFilterFn;
+  setLowPass: SetFilterFn;
+  setPeq: (
+    channel: Channel,
+    band: PEQBand,
+    gainDb: number,
+    freqHz: number,
+    q: number,
+    filterType: PEQFilter,
+    bypass: boolean
+  ) => Promise<boolean>;
+  setPeqBypass: (channel: Channel, bypass: boolean) => Promise<boolean>;
+}) {
+  // UI variables
+  const [activeBand, setActiveBand] = useState<PEQBand>(PEQBand.B1);
+  const [graphView, setGraphView] = useState<GraphView>('both');
+  const [resetting, setResetting] = useState(false);
+  const [isResetConfirmOpen, setIsResetConfirmOpen] = useState(false);
+
+  // Live values
+  const [liveHpFreq, setLiveHpFreq] = useState<number>(FREQUENCY_MIN);
+  const [liveLpFreq, setLiveLpFreq] = useState<number>(FREQUENCY_MAX);
+  const [livePeq, setLivePeq] = useState<Partial<Record<PEQBand, PEQ>>>({});
+
+  const magnitudeGraphRef = useRef<LinearGraphHandle>(null);
+
+  // DSP values
+  const isInput = 'Input' in channel;
+
+  const activeChannelState = isInput
+    ? dsp.state.current_config.input_states[channel.Input]
+    : dsp.state.current_config.output_states[channel.Output];
+  const ActiveHighPassFilter = activeChannelState.crossover.high_pass;
+  const ActiveLowPassFilter = activeChannelState.crossover.low_pass;
+  const ActivePeq = activeChannelState.peq_chain;
+
+  const bandsOrder = isInput ? PEQ_BANDS_ORDER.slice(0, -1) : PEQ_BANDS_ORDER;
+
+  useEffect(() => {
+    if (!isResetConfirmOpen) return;
+
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        setIsResetConfirmOpen(false);
+      }
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, [isResetConfirmOpen]);
+
+  const handleResetClick = () => {
+    setIsResetConfirmOpen(true);
+  };
+
+  const handleResetPeq = async () => {
+    if (resetting) return;
+    setResetting(true);
+
+    for (const band of bandsOrder) {
+      const current = displayPeq[band];
+      // Skip only if already flat — nothing to change.
+      if (current.gain === 0 && current.filter_type === PEQFilter.Peak) continue;
+
+      await commitPEQ(band, 0, current.frequency, current.q, PEQFilter.Peak, current.bypass);
+    }
+
+    setResetting(false);
+  };
+
+  const confirmResetPeq = async () => {
+    setIsResetConfirmOpen(false);
+    await handleResetPeq();
+  };
+
+  const handleBypassClick = () => {
+    setPeqBypass(channel, !ActivePeq.bypass);
+  };
+
+  // Live handlers
+  const handleLiveHighPassValue = (value: number) => {
+    setLiveHpFreq(value);
+  };
+
+  const handleLiveLowPassValue = (value: number) => {
+    setLiveLpFreq(value);
+  };
+
+  const handleLivePEQValue = (band: PEQBand, value: PEQ) => {
+    setLivePeq((prev) => ({
+      ...prev,
+      [band]: value,
+    }));
+  };
+
+  // Real dsp value handlers
+  const commitHighPass = async (freq: number, filterType: CrossoverFilter) => {
+    const success = await setHighPass(channel, freq, filterType);
+    if (success) {
+      setLiveHpFreq(freq);
+    }
+    return success;
+  };
+
+  const commitLowPass = async (freq: number, filterType: CrossoverFilter) => {
+    const success = await setLowPass(channel, freq, filterType);
+    if (success) {
+      setLiveLpFreq(freq);
+    }
+    return success;
+  };
+
+  const commitPEQ = async (
+    band: PEQBand,
+    gain: number,
+    frequency: number,
+    q: number,
+    filter_type: PEQFilter,
+    bypass: boolean
+  ) => {
+    const success = await setPeq(channel, band, gain, frequency, q, filter_type, bypass);
+    if (success) {
+      setLivePeq((prev) => {
+        const next = { ...prev };
+        delete next[band];
+        return next;
+      });
+    }
+    return success;
+  };
+
+  // Diplay value (merge live and real)
+  const displayPeq: Record<PEQBand, PEQ> = {
+    ...ActivePeq.bands,
+    ...livePeq,
+  };
+
+  const highPassSpec = { frequency: liveHpFreq, filter_type: ActiveHighPassFilter.slope };
+  const lowPassSpec = { frequency: liveLpFreq, filter_type: ActiveLowPassFilter.slope };
+
+  const freqs = logSpace(GRAPH_X_MIN, GRAPH_X_MAX, 1000);
+
+  return (
+    <>
+      <div className="channel-graph-section">
+        <div className="channel-graph-panel">
+          <div className="channel-graph__title-row">
+            <div className="channel-graph__title">{activeChannelState.name} - Filters</div>
+            <GraphViewToggle view={graphView} onChange={setGraphView} />
+          </div>
+
+          {(graphView === 'both' || graphView === 'magnitude') && (
+            <div className="channel-graph-panel__magnitude-wrap">
+              <LinearGraph
+                ref={magnitudeGraphRef}
+                xMin={GRAPH_X_MIN}
+                xMax={GRAPH_X_MAX}
+                xScale="log"
+                yMin={GRAPH_Y_MIN}
+                yMax={GRAPH_Y_MAX}
+                yStep={3}
+                xLabel="Frequency - Hz"
+                yLabel="Magnituded - dB"
+                showGrid={true}
+                formatX={(v) => Math.round(v).toString()}
+                formatY={(v) => Math.round(v).toString()}
+                draw={({ ctx, toPx }) => {
+                  drawCurves({
+                    ctx,
+                    toPx,
+                    xMin: GRAPH_X_MIN,
+                    xMax: GRAPH_X_MAX,
+                    yMin: GRAPH_Y_MIN,
+                    yMax: GRAPH_Y_MAX,
+                    curves: [
+                      {
+                        points: sumCurvePoints([
+                          getPeqCurvePoints({ freqs, bands: displayPeq }),
+                          getCrossoverCurvePoints({
+                            freqs,
+                            highPass: highPassSpec,
+                            lowPass: lowPassSpec,
+                          }),
+                        ]),
+                        style: { strokeColor: '#e5e7eb', dimmed: ActivePeq.bypass },
+                      },
+                    ],
+                  });
+                }}
+              />
+            </div>
+          )}
+
+          {(graphView === 'both' || graphView === 'phase') && (
+            <LinearGraph
+              xMin={GRAPH_X_MIN}
+              xMax={GRAPH_X_MAX}
+              xScale="log"
+              yMin={-180}
+              yMax={180}
+              yStep={45}
+              xLabel="Frequency - Hz"
+              yLabel="Phase - Deg"
+              showGrid={true}
+              formatX={(v) => Math.round(v).toString()}
+              formatY={(v) => Math.round(v).toString()}
+              draw={({ ctx, toPx }) => {
+                drawCurves({
+                  ctx,
+                  toPx,
+                  xMin: GRAPH_X_MIN,
+                  xMax: GRAPH_X_MAX,
+                  yMin: GRAPH_Y_MIN,
+                  yMax: GRAPH_Y_MAX,
+                  curves: [
+                    {
+                      points: sumPhaseCurvePoints([
+                        getPeqPhasePoints({ freqs, bands: displayPeq }),
+                        getCrossoverPhasePoints({
+                          freqs,
+                          highPass: highPassSpec,
+                          lowPass: lowPassSpec,
+                        }),
+                      ]),
+                      style: { strokeColor: '#e5e7eb', dimmed: ActivePeq.bypass },
+                    },
+                  ],
+                });
+              }}
+            />
+          )}
+
+          {ActivePeq.bypass && (
+            <div className="channel-bypass-overlay">
+              <span>BYPASSED</span>
+            </div>
+          )}
+        </div>
+      </div>
+
+      <div className="channel-control-section">
+        <div className="channel-control-panel">
+          <ChannelGroup title="PEQ">
+            <PeqBandList
+              bands={ActivePeq.bands}
+              liveBands={livePeq}
+              activeBand={activeBand}
+              setActiveBand={setActiveBand}
+              setPEQ={commitPEQ}
+              bandsOrder={bandsOrder}
+            />
+            <PeqPanelSliders
+              peq={ActivePeq.bands[activeBand]}
+              setPEQ={(gain, frequency, q, filter_type, bypass) =>
+                commitPEQ(activeBand, gain, frequency, q, filter_type, bypass)
+              }
+              onLiveValue={(value) => handleLivePEQValue(activeBand, value)}
+            />
+          </ChannelGroup>
+
+          <ChannelGroup title="CrossOver">
+            <CrossoverPanel
+              crossover={ActiveHighPassFilter}
+              title="HighPass"
+              setCrossover={commitHighPass}
+              onLiveValue={handleLiveHighPassValue}
+            />
+            <CrossoverPanel
+              crossover={ActiveLowPassFilter}
+              title="LowPass"
+              setCrossover={commitLowPass}
+              onLiveValue={handleLiveLowPassValue}
+            />
+          </ChannelGroup>
+
+          <ChannelGroup title="Actions">
+            <ChannelActions
+              bypass={ActivePeq.bypass}
+              resetting={resetting}
+              onBypass={handleBypassClick}
+              onReset={handleResetClick}
+            />
+          </ChannelGroup>
+        </div>
+      </div>
+
+      {isResetConfirmOpen && (
+        <div className="confirm-modal-overlay" onClick={() => setIsResetConfirmOpen(false)}>
+          <div className="confirm-modal" onClick={(e) => e.stopPropagation()}>
+            <h3>Reset {activeChannelState.name} PEQ?</h3>
+            <p>
+              This will set all PEQ bands on {activeChannelState.name} back to flat (0 dB, Peak).
+              This action cannot be undone.
+            </p>
+
+            <div className="confirm-modal__actions">
+              <Button variant="outline" onClick={() => setIsResetConfirmOpen(false)}>
+                Cancel
+              </Button>
+              <Button variant="primary" onClick={confirmResetPeq}>
+                Reset
+              </Button>
+            </div>
+          </div>
+        </div>
+      )}
+    </>
+  );
+}
+
+export default ChannelSection;
@@ -18,17 +18,23 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .compressor-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
+  justify-content: center;
 }

 .compressor-panel {
  position: relative;
+  height: 100%;

  aspect-ratio: 0.5;
  flex: 0 0 auto;
@@ -91,8 +97,9 @@

 .compressor-panel__cell--steppers {
  flex-direction: column;
-  justify-content: center;
+  justify-content: stretch;
  gap: 1cqh;
+  display: flex;
 }

 .compressor-panel__stepper-item {
@@ -108,6 +115,19 @@
  gap: 1cqh;
 }

+.compressor-panel__stepper-item .choice-stepper {
+  flex: 0 0 auto;
+  height: auto;
+}
+
+.compressor-panel__stepper {
+  display: flex;
+  font-size: 4cqh;
+  text-align: center;
+  align-items: stretch;
+  height: 100%;
+}
+
 .compressor-panel__cell {
  display: flex;
  flex-direction: column;
@@ -126,87 +146,6 @@
  white-space: nowrap;
 }

-.choice-stepper {
-  width: 100%;
-  flex: 1 1 auto;
-
-  position: relative;
-  display: flex;
-  align-items: stretch;
-  justify-content: center;
-
-  border: var(--border-width) solid var(--border-hairline);
-  border-radius: var(--radius-sm);
-  background: transparent;
-}
-
-.choice-stepper__input {
-  flex: 1 1 auto;
-  min-width: 0;
-  width: 100%;
-
-  font-family: var(--font-ui);
-  font-size: 3cqh;
-  font-weight: var(--font-weight-semibold);
-  text-align: center;
-
-  color: var(--accent-brand);
-
-  background: transparent;
-  border: none;
-  border-radius: var(--radius-sm);
-  padding: 0.5ch;
-
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-}
-
-.choice-stepper__input:focus {
-  outline: none;
-}
-
-.choice-stepper__arrows {
-  flex: 0 0 auto;
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-  gap: 0.5cqh;
-
-  height: 100%;
-  box-sizing: border-box;
-  padding: 1cqh;
-  padding-left: 0;
-}
-
-.choice-stepper__arrow-btn {
-  aspect-ratio: 1;
-  height: 4.5cqh;
-  min-height: 0;
-
-  display: flex;
-  align-items: center;
-  justify-content: center;
-
-  padding: 0;
-  color: var(--accent-brand);
-
-  background: transparent;
-  border-radius: 1cqh;
-
-  cursor: pointer;
-}
-
-.choice-stepper__arrow-btn:disabled {
-  opacity: 0.4;
-  cursor: not-allowed;
-}
-
-.choice-stepper__arrow-btn svg {
-  width: 100%;
-  height: 100%;
-}
-
 .compressor-graph__channel {
  font-size: var(--font-xs);
  color: var(--text-muted);
@@ -223,6 +162,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .compressor-graph-panel {
@@ -287,3 +229,15 @@
  flex: 1;
  min-height: 0;
 }
+
+.compressor-panel__stepper--centered .choice-stepper__input {
+  text-align: center;
+  padding: 0;
+  margin: 0;
+}
+
+.compressor-panel__stepper--centered .choice-stepper__arrows {
+  flex: 0 0 20%;
+  width: 20%;
+  padding-right: 0;
+}
@@ -2,74 +2,13 @@
 import VerticalSlider from '../../../../components/VerticalSlider/VerticalSlider';
 import { OutputChannel, Ratio } from '../../types';
 import { DSP408 as DSP } from '../../../../types';
-import Button from '../../../../components/Button/Button';
 import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
 import { LinearGraph } from '../../../../components/LinearGraph/LinearGraph';
 import MeterBar from '../../../../components/MeterBar/MeterBar';
-import { useMemo, useState, useEffect } from 'react';
-import { TriangleUpIcon, TriangleDownIcon } from '../../../../assets/icons/Triangle';
+import { useMemo, useState } from 'react';
+import ChoiceStepper from '../../../../components/ChoiceStepper/ChoiceStepper';
 import './CompressorSection.css';
-
-// Enum order defines stepper order (1:1 -> Limit).
-const RATIO_ORDER: Ratio[] = [
-  Ratio.Ratio1_1,
-  Ratio.Ratio1_1_1,
-  Ratio.Ratio1_1_3,
-  Ratio.Ratio1_1_5,
-  Ratio.Ratio1_1_7,
-  Ratio.Ratio1_2,
-  Ratio.Ratio1_2_5,
-  Ratio.Ratio1_3,
-  Ratio.Ratio1_3_5,
-  Ratio.Ratio1_4,
-  Ratio.Ratio1_5,
-  Ratio.Ratio1_6,
-  Ratio.Ratio1_8,
-  Ratio.Ratio1_10,
-  Ratio.Ratio1_20,
-  Ratio.Limit,
-];
-
-const RATIO_LABEL: Record<Ratio, string> = {
-  [Ratio.Ratio1_1]: '1:1',
-  [Ratio.Ratio1_1_1]: '1.1:1',
-  [Ratio.Ratio1_1_3]: '1.3:1',
-  [Ratio.Ratio1_1_5]: '1.5:1',
-  [Ratio.Ratio1_1_7]: '1.7:1',
-  [Ratio.Ratio1_2]: '2:1',
-  [Ratio.Ratio1_2_5]: '2.5:1',
-  [Ratio.Ratio1_3]: '3:1',
-  [Ratio.Ratio1_3_5]: '3.5:1',
-  [Ratio.Ratio1_4]: '4:1',
-  [Ratio.Ratio1_5]: '5:1',
-  [Ratio.Ratio1_6]: '6:1',
-  [Ratio.Ratio1_8]: '8:1',
-  [Ratio.Ratio1_10]: '10:1',
-  [Ratio.Ratio1_20]: '20:1',
-  [Ratio.Limit]: 'Limit',
-};
-
-// Numeric ratio used only for drawing the transfer curve; Limit ~= brickwall.
-const RATIO_NUMERIC: Record<Ratio, number> = {
-  [Ratio.Ratio1_1]: 1,
-  [Ratio.Ratio1_1_1]: 1.1,
-  [Ratio.Ratio1_1_3]: 1.3,
-  [Ratio.Ratio1_1_5]: 1.5,
-  [Ratio.Ratio1_1_7]: 1.7,
-  [Ratio.Ratio1_2]: 2,
-  [Ratio.Ratio1_2_5]: 2.5,
-  [Ratio.Ratio1_3]: 3,
-  [Ratio.Ratio1_3_5]: 3.5,
-  [Ratio.Ratio1_4]: 4,
-  [Ratio.Ratio1_5]: 5,
-  [Ratio.Ratio1_6]: 6,
-  [Ratio.Ratio1_8]: 8,
-  [Ratio.Ratio1_10]: 10,
-  [Ratio.Ratio1_20]: 20,
-  [Ratio.Limit]: 1000,
-};
-
-const KNEE_VALUES = Array.from({ length: 13 }, (_, i) => i); // 0..12 dB, integer steps
+import { RATIO_ORDER, RATIO_LABEL, RATIO_NUMERIC, KNEE_VALUES } from '../../constants';

 const COMPRESSOR_SLIDER_PARAMS = [
  { key: 'threshold', label: 'Threshold', min: -90, max: 20, step: 0.5, unit: ' dB' },
@@ -77,19 +16,6 @@ const COMPRESSOR_SLIDER_PARAMS = [
  { key: 'release', label: 'Release', min: 10, max: 3000, step: 1, unit: ' ms' },
 ] as const;

-// ASSUMPTION: output meter indices follow the 4 input channels (0-3), i.e.
-// Out1 -> 4, Out2 -> 5, etc. Adjust to match dsp.meters.channels ordering.
-const OUTPUT_METER_INDEX: Record<OutputChannel, number> = {
-  [OutputChannel.Out1]: 4,
-  [OutputChannel.Out2]: 5,
-  [OutputChannel.Out3]: 6,
-  [OutputChannel.Out4]: 7,
-  [OutputChannel.Out5]: 8,
-  [OutputChannel.Out6]: 9,
-  [OutputChannel.Out7]: 10,
-  [OutputChannel.Out8]: 11,
-} as const;
-
 type CompressorParamKey = 'ratio' | 'attack' | 'release' | 'knee' | 'threshold';

 type CompressorValues = {
@@ -109,85 +35,6 @@ type SetCompressorFn = (
  threshold: number
 ) => Promise<boolean>;

-function ChoiceStepper<T>({
-  value,
-  values,
-  formatLabel,
-  onChange,
-}: {
-  value: T;
-  values: readonly T[];
-  formatLabel: (value: T) => string;
-  onChange: (value: T) => void;
-}) {
-  const index = values.indexOf(value);
-  const canUp = index === -1 || index < values.length - 1;
-  const canDown = index > 0;
-
-  const [text, setText] = useState(formatLabel(value));
-
-  useEffect(() => {
-    setText(formatLabel(value));
-  }, [value, formatLabel]);
-
-  const step = (dir: 1 | -1) => {
-    const currentIndex = index === -1 ? 0 : index;
-    const nextIndex = Math.min(values.length - 1, Math.max(0, currentIndex + dir));
-    if (nextIndex !== currentIndex) onChange(values[nextIndex]);
-  };
-
-  const commitText = () => {
-    const match = values.find(
-      (v) => formatLabel(v).trim().toLowerCase() === text.trim().toLowerCase()
-    );
-    if (match !== undefined) {
-      onChange(match);
-    } else {
-      setText(formatLabel(value));
-    }
-  };
-
-  return (
-    <div className="choice-stepper">
-      <input
-        className="choice-stepper__input"
-        value={text}
-        onChange={(e) => setText(e.target.value)}
-        onBlur={commitText}
-        onKeyDown={(e) => {
-          if (e.key === 'Enter') {
-            e.currentTarget.blur();
-          } else if (e.key === 'ArrowUp') {
-            e.preventDefault();
-            step(1);
-          } else if (e.key === 'ArrowDown') {
-            e.preventDefault();
-            step(-1);
-          }
-        }}
-      />
-      <div className="choice-stepper__arrows">
-        <Button
-          variant="toggle"
-          className="choice-stepper__arrow-btn"
-          onClick={() => step(1)}
-          disabled={!canUp}
-        >
-          <TriangleUpIcon />
-        </Button>
-        <Button
-          variant="toggle"
-          className="choice-stepper__arrow-btn"
-          onClick={() => step(-1)}
-          disabled={!canDown}
-        >
-          <TriangleDownIcon />
-        </Button>
-      </div>
-    </div>
-  );
-}
-
 function CompressorPanel({
  channel,
  dsp,
@@ -234,6 +81,7 @@ function CompressorPanel({
        <div className="compressor-panel__cell compressor-panel__cell--steppers">
          <div className="compressor-panel__stepper-item">
            <ChoiceStepper
+              className="compressor-panel__stepper compressor-panel__stepper--centered"
              value={comp.ratio}
              values={RATIO_ORDER}
              formatLabel={(v) => RATIO_LABEL[v]}
@@ -247,6 +95,7 @@ function CompressorPanel({

          <div className="compressor-panel__stepper-item">
            <ChoiceStepper
+              className="compressor-panel__stepper compressor-panel__stepper--centered"
              value={comp.knee}
              values={KNEE_VALUES}
              formatLabel={(v) => `${v} dB`}
@@ -263,19 +112,44 @@ function CompressorPanel({
  );
 }

-// Soft-knee compressor transfer curve, in dB.
+// Compressor transfer curve, in dB.
+//
+// The knee is NOT a smooth/quadratic blend. It is three straight
+// (piecewise-linear) segments:
+//   1) input <= kneeStart          -> 1:1 line (output = input)
+//   2) kneeStart < input < kneeEnd -> a straight line connecting the
+//                                     point on segment (1) at kneeStart
+//                                     to the point on segment (3) at kneeEnd
+//   3) input >= kneeEnd            -> ratio line (output = threshold + (input-threshold)/ratio)
+//
+// kneeStart/kneeEnd are simply the threshold shifted down/up by half the
+// knee width, so increasing "knee" widens the middle straight segment
+// symmetrically around the threshold.
 function compressorOutputDb(input: number, threshold: number, ratio: number, knee: number): number {
  const kneeStart = threshold - knee / 2;
  const kneeEnd = threshold + knee / 2;

-  if (knee <= 0 || input <= kneeStart) {
+  // No knee: simple two-segment (hard-knee) curve.
+  if (knee <= 0) {
    return input <= threshold ? input : threshold + (input - threshold) / ratio;
  }
+
+  // Segment 1: below the knee, straight 1:1 line.
+  if (input <= kneeStart) {
+    return input;
+  }
+
+  // Segment 3: above the knee, straight ratio line.
  if (input >= kneeEnd) {
    return threshold + (input - threshold) / ratio;
  }
-  const x = input - kneeStart;
-  return input + ((1 / ratio - 1) * x * x) / (2 * knee);
+
+  // Segment 2: straight line between the two boundary points
+  // (kneeStart, kneeStart) and (kneeEnd, threshold + (kneeEnd - threshold) / ratio).
+  const y1 = kneeStart;
+  const y2 = threshold + (kneeEnd - threshold) / ratio;
+  const t = (input - kneeStart) / (kneeEnd - kneeStart);
+  return y1 + t * (y2 - y1);
 }

 function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor: SetCompressorFn }) {
@@ -339,7 +213,7 @@ function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor:
    const steps = 120;
    const points: [number, number][] = [];
    for (let i = 0; i <= steps; i++) {
-      const x = -60 + (60 * i) / steps;
+      const x = -100 + (100 * i) / steps;
      points.push([x, compressorOutputDb(x, threshold, ratioNumeric, knee)]);
    }
    return points;
@@ -352,9 +226,9 @@ function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor:
          <div className="compressor-graph__title">{activeOutputState.name} - RMS Compressor</div>

          <LinearGraph
-            xMin={-60}
+            xMin={-100}
            xMax={0}
-            yMin={-60}
+            yMin={-100}
            yMax={0}
            xLabel="in dB"
            yLabel="out dB"
@@ -365,7 +239,7 @@ function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor:
              ctx.strokeStyle = '#6b7280';
              ctx.lineWidth = 1;
              ctx.setLineDash([4, 4]);
-              const [ux0, uy0] = toPx(-60, -60);
+              const [ux0, uy0] = toPx(-100, -100);
              const [ux1, uy1] = toPx(0, 0);
              ctx.beginPath();
              ctx.moveTo(ux0, uy0);
@@ -377,7 +251,7 @@ function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor:
              ctx.strokeStyle = '#fbbf24';
              ctx.lineWidth = 1;
              ctx.setLineDash([2, 3]);
-              const [tx0, ty0] = toPx(activeComp.threshold, -60);
+              const [tx0, ty0] = toPx(activeComp.threshold, -100);
              const [tx1, ty1] = toPx(activeComp.threshold, 0);
              ctx.beginPath();
              ctx.moveTo(tx0, ty0);
@@ -404,10 +278,13 @@ function CompressorSection({ dsp, set_compressor }: { dsp: DSP; set_compressor:
          <div className="compressor-graph__meters">
            {outputs.map((output) => {
              const outputState = dsp.state.current_config.output_states[output];
-              const idx = OUTPUT_METER_INDEX[output];

              return (
-                <MeterBar key={output} label={outputState.name} meter={dsp.meters.channels[idx]} />
+                <MeterBar
+                  key={output}
+                  label={outputState.name}
+                  meter={dsp.output_meters.meters[output]}
+                />
              );
            })}
          </div>
@@ -5,6 +5,9 @@
  display: flex;
  justify-content: center;
  align-items: center;
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .connection-panel {
@@ -1,4 +1,4 @@
-import { DSP } from '../../../../types';
+import { DSP, isConnected } from '../../../../types';
 import Button from '../../../../components/Button/Button';
 import Card from '../../../../components/Card/Card';
 import Led from '../../../../components/Led/Led';
@@ -14,10 +14,11 @@ function ConnectionPanel({
  onConnect: () => void;
  onDisconnect: () => void;
 }) {
+
    const statusLabel =
-    dsp.status === 'connected'
+      isConnected(dsp)
        ? 'Connected'
-      : dsp.status === 'connecting'
+        : dsp.isConnecting
          ? 'Connecting…'
          : 'Disconnected';
          
@@ -35,10 +36,10 @@ function ConnectionPanel({

          <div className="connection-panel__status">
            <span className="connection-panel__led">
-              <Led status={dsp.status} />
+              <Led status={dsp.isConnecting ? "connecting" : isConnected(dsp) ? "connected" : "disconnected"} />
            </span>

-            <span className={`status-label status-label--${dsp.status}`}>{statusLabel}</span>
+            <span>{statusLabel}</span>
          </div>
        </div>

@@ -64,13 +65,13 @@ function ConnectionPanel({
        </dl>

        <div className="connection-panel__actions">
-          {dsp.status === 'connected' ? (
+          {isConnected(dsp) ? (
            <Button variant="outline" onClick={onDisconnect}>
              Disconnect
            </Button>
          ) : (
-            <Button variant="primary" onClick={onConnect} disabled={dsp.status === 'connecting'}>
-              {dsp.status === 'connecting' ? 'Connecting…' : 'Connect'}
+            <Button variant="primary" onClick={onConnect} disabled={dsp.isConnecting}>
+              {dsp.isConnecting ? 'Connecting…' : 'Connect'}
            </Button>
          )}
        </div>
@@ -29,3 +29,9 @@
 .app-root:has(.sidebar-rail--expanded) .dsp-loading-overlay {
  left: var(--sidebar-width-expanded);
 }
+
+.app-root {
+  position: relative;
+  width: 100%;
+  height: 100%;
+}
@@ -1,7 +1,17 @@
-import { useState } from 'react';
-import { DSP } from '../../../../types';
-import Sidebar from '../../../../components/Sidebar/Sidebar';
-import { InfoIcon, KnobGainIcon, TextIcon } from '../../../../assets/icons/AudioIcons';
+import { useEffect, useState, type SetStateAction } from 'react';
+import { Sidebar, SidebarItem } from '../../../../components/Sidebar/Sidebar';
+import {
+  BoltIcon,
+  CompressorIcon,
+  DelayIcon,
+  GainIcon,
+  GateIcon,
+  InfoIcon,
+  LimiterIcon,
+  MatrixIcon,
+  SlidersVerticalIcon,
+  TextIcon,
+} from '../../../../assets/icons/AudioIcons';
 import ConnectionPanel from '../ConnectionSection/ConnectionSection';
 import GainSection from '../GainSection/GainSection';
 import CompressorSection from '../CompressorSection/CompressorSection';
@@ -12,92 +22,79 @@ import LoadingOverlay from '../../../../components/LoadingOverlay/LoadingOverlay
 import { InputChannel, OutputChannel } from '../../types';
 import MatrixSection from '../Matrixsection/Matrixsection';
 import GeqSection from '../GeqSection/GeqSection';
-import InputSection from '../InputSection/InputSection';
+import ChannelSection from '../ChannelSection/ChannelSection';
 import { DSP408Api } from '../../dsp408';
+import { DSP408 } from '../../../../types';
+import { SidebarId } from '../../constants';
 import './DSP408Panel.css';
+import MiscellaneousPanel from '../MiscellaneousSection/MiscellaneousSection';
+import { PasswordDialog } from '../PasswordDialog/PasswordDialog';

-type DSP408 = Extract<DSP, { type: 'DSP408' }>;
+const activeSidebarByDsp = new Map<number, SidebarId>();

 function DSP408Panel({ dsp, api }: { dsp: DSP408; api: DSP408Api }) {
-  const [activeSidebar, setActiveSidebar] = useState('overview');
  const [sidebarExpanded, setSidebarExpanded] = useState(false);
-  const [selectedPreset, setSelectedPreset] = useState(dsp.state?.presets.current_index ?? 0);
+  const [selectedPreset, setSelectedPreset] = useState(dsp.state.presets.current_index);
  const [presetLoading, setPresetLoading] = useState(false);
-  const inputStates = dsp.state?.current_config.input_states;
-  const outputStates = dsp.state?.current_config.output_states;

-  const sidebarItems = [
+  const inputStates = dsp.state.current_config.input_states;
+  const outputStates = dsp.state.current_config.output_states;
+
+  const sidebarItems: SidebarItem<SidebarId>[] = [
    { id: 'overview', label: 'Overview', icon: <InfoIcon /> },
-    { id: 'gain', label: 'Gain', icon: <KnobGainIcon /> },
-    { id: 'gate', label: 'Gate', icon: <KnobGainIcon /> },
-    { id: 'compressor', label: 'Compressor', icon: <KnobGainIcon /> },
-    { id: 'limiter', label: 'Limiter', icon: <KnobGainIcon /> },
-    { id: 'delay', label: 'Delay', icon: <KnobGainIcon /> },
-    { id: 'matrix', label: 'Matrix', icon: <KnobGainIcon /> },
-    { id: 'geq', label: 'Graphic Equalizer', icon: <KnobGainIcon /> },
-    { id: 'ina', label: `${inputStates[InputChannel.InA].name}`, icon: <TextIcon>In A</TextIcon> },
-    { id: 'inb', label: `${inputStates[InputChannel.InB].name}`, icon: <TextIcon>In B</TextIcon> },
-    { id: 'inc', label: `${inputStates[InputChannel.InC].name}`, icon: <TextIcon>In C</TextIcon> },
-    { id: 'ind', label: `${inputStates[InputChannel.InD].name}`, icon: <TextIcon>In D</TextIcon> },
-    {
-      id: 'out1',
-      label: `${outputStates[OutputChannel.Out1].name}`,
-      icon: <TextIcon>Out 1</TextIcon>,
-    },
-    {
-      id: 'out2',
-      label: `${outputStates[OutputChannel.Out2].name}`,
-      icon: <TextIcon>Out 2</TextIcon>,
-    },
-    {
-      id: 'out3',
-      label: `${outputStates[OutputChannel.Out3].name}`,
-      icon: <TextIcon>Out 3</TextIcon>,
-    },
-    {
-      id: 'out4',
-      label: `${outputStates[OutputChannel.Out4].name}`,
-      icon: <TextIcon>Out 4</TextIcon>,
-    },
-    {
-      id: 'out5',
-      label: `${outputStates[OutputChannel.Out5].name}`,
-      icon: <TextIcon>Out 5</TextIcon>,
-    },
-    {
-      id: 'out6',
-      label: `${outputStates[OutputChannel.Out6].name}`,
-      icon: <TextIcon>Out 6</TextIcon>,
-    },
-    {
-      id: 'out7',
-      label: `${outputStates[OutputChannel.Out7].name}`,
-      icon: <TextIcon>Out 7</TextIcon>,
-    },
-    {
-      id: 'out8',
-      label: `${outputStates[OutputChannel.Out8].name}`,
-      icon: <TextIcon>Out 8</TextIcon>,
-    },
-    { id: 'miscellaneous', label: 'Miscellaneous', icon: <TextIcon>Out 1</TextIcon> },
+    { id: 'gain', label: 'Gain', icon: <GainIcon /> },
+    { id: 'gate', label: 'Gate', icon: <GateIcon /> },
+    { id: 'compressor', label: 'Compressor', icon: <CompressorIcon /> },
+    { id: 'limiter', label: 'Limiter', icon: <LimiterIcon /> },
+    { id: 'delay', label: 'Delay', icon: <DelayIcon /> },
+    { id: 'matrix', label: 'Matrix', icon: <MatrixIcon /> },
+    { id: 'geq', label: 'Graphic Equalizer', icon: <SlidersVerticalIcon /> },
+    { id: 'ina', label: inputStates[InputChannel.InA].name, icon: <TextIcon>In A</TextIcon>, editable: true },
+    { id: 'inb', label: inputStates[InputChannel.InB].name, icon: <TextIcon>In B</TextIcon>, editable: true },
+    { id: 'inc', label: inputStates[InputChannel.InC].name, icon: <TextIcon>In C</TextIcon>, editable: true },
+    { id: 'ind', label: inputStates[InputChannel.InD].name, icon: <TextIcon>In D</TextIcon>, editable: true },
+    { id: 'out1', label: outputStates[OutputChannel.Out1].name, icon: <TextIcon>Out 1</TextIcon>, editable: true },
+    { id: 'out2', label: outputStates[OutputChannel.Out2].name, icon: <TextIcon>Out 2</TextIcon>, editable: true },
+    { id: 'out3', label: outputStates[OutputChannel.Out3].name, icon: <TextIcon>Out 3</TextIcon>, editable: true },
+    { id: 'out4', label: outputStates[OutputChannel.Out4].name, icon: <TextIcon>Out 4</TextIcon>, editable: true },
+    { id: 'out5', label: outputStates[OutputChannel.Out5].name, icon: <TextIcon>Out 5</TextIcon>, editable: true },
+    { id: 'out6', label: outputStates[OutputChannel.Out6].name, icon: <TextIcon>Out 6</TextIcon>, editable: true },
+    { id: 'out7', label: outputStates[OutputChannel.Out7].name, icon: <TextIcon>Out 7</TextIcon>, editable: true },
+    { id: 'out8', label: outputStates[OutputChannel.Out8].name, icon: <TextIcon>Out 8</TextIcon>, editable: true },
+    { id: 'miscellaneous', label: 'Miscellaneous', icon: <BoltIcon /> },
  ];

-  const presets = dsp.state?.presets.names
-    ? [
+  const presets = [
    { id: 'f00', name: 'Factory Preset' },
-        ...dsp.state.presets.names.map((name, index) => ({
+    ...(dsp.state.presets.names.map((name, index) => ({
      id: `u${String(index + 1).padStart(2, '0')}`,
      name,
-        })),
-      ]
-    : [
-        { id: 'f00', name: 'Factory Preset' },
-        ...Array.from({ length: 20 }, (_, index) => ({
+    })) ??
+      Array.from({ length: 20 }, (_, index) => ({
        id: `u${String(index + 1).padStart(2, '0')}`,
        name: 'Default Preset',
-        })),
+      }))),
  ];

+  const [activeSidebar, setActiveSidebarState] = useState<SidebarId>(
+    () => activeSidebarByDsp.get(dsp.id) ?? 'overview'
+  );
+
+  useEffect(() => {
+    const saved = activeSidebarByDsp.get(dsp.id) ?? 'overview';
+    setActiveSidebarState(saved);
+  }, [dsp.id]);
+
+  const setActiveSidebar = (value: SetStateAction<SidebarId>) => {
+    setActiveSidebarState(prev => {
+      const next = typeof value === 'function' ? value(prev) : value;
+
+      activeSidebarByDsp.set(dsp.id, next);
+
+      return next;
+    });
+  };
+
  const onAppChange = async (id: string) => {
    const presetIndex = presets.findIndex((preset) => preset.id === id);
    if (presetIndex === -1) return;
@@ -108,6 +105,43 @@ function DSP408Panel({ dsp, api }: { dsp: DSP408; api: DSP408Api }) {
    setPresetLoading(false);
  };

+  const onItemRename = async (id: SidebarId, name: string) => {
+    const channel = channelMap[id];
+    if (!channel) return;
+
+    const padded = name.slice(0, 8).padEnd(8, '\0');
+    await api.setChannelName(channel, padded);
+  };
+
+  const renderChannel = (channel: { Input: InputChannel } | { Output: OutputChannel }) => (
+    <ChannelSection
+      dsp={dsp}
+      channel={channel}
+      setLowPass={api.setLowPass}
+      setHighPass={api.setHighPass}
+      setPeq={api.setPeqBand}
+      setPeqBypass={api.setPEQBypass}
+    />
+  );
+
+  const channelMap: Partial<
+    Record<SidebarId, { Input: InputChannel } | { Output: OutputChannel }>
+  > = {
+    ina: { Input: InputChannel.InA },
+    inb: { Input: InputChannel.InB },
+    inc: { Input: InputChannel.InC },
+    ind: { Input: InputChannel.InD },
+
+    out1: { Output: OutputChannel.Out1 },
+    out2: { Output: OutputChannel.Out2 },
+    out3: { Output: OutputChannel.Out3 },
+    out4: { Output: OutputChannel.Out4 },
+    out5: { Output: OutputChannel.Out5 },
+    out6: { Output: OutputChannel.Out6 },
+    out7: { Output: OutputChannel.Out7 },
+    out8: { Output: OutputChannel.Out8 },
+  };
+
  const renderTab = () => {
    switch (activeSidebar) {
      case 'overview':
@@ -135,34 +169,36 @@ function DSP408Panel({ dsp, api }: { dsp: DSP408; api: DSP408Api }) {
      case 'delay':
        return <DelaySection dsp={dsp} setDelay={api.setDelay} setDelayUnit={api.setDelayUnit} />;

-      case 'ina':
-        return (
-          <InputSection
-            dsp={dsp}
-            channel={InputChannel.InA}
-            set_low_pass={api.setLowPass}
-            set_high_pass={api.setHighPass}
-            setPeq={api.setPeqBand}
-            setGain={api.setGain}
-            setMute={api.setMute}
-            setInverse={api.setInverse}
-          />
-        );
-
      case 'matrix':
        return (
          <MatrixSection
            dsp={dsp}
            setMatrixRouting={api.setMatrixRouting}
            setMatrixGain={api.setMatrixGain}
+            setActiveSidebar={setActiveSidebar}
          />
        );

      case 'geq':
        return <GeqSection dsp={dsp} setGeqBand={api.setGeqBand} setGeqBypass={api.setGeqBypass} />;

-      default:
-        return null;
+      case 'miscellaneous':
+        return (
+          <MiscellaneousPanel
+            dsp={dsp}
+            factoryReset={api.factoryReset}
+            copyChannel={api.copyChannel}
+            setInputSource={api.setInputSource}
+            linkChannels={api.linkChannels}
+            lockDevice={api.lockDevice}
+            setActiveSidebar={setActiveSidebar}
+          />
+        );
+
+      default: {
+        const channel = channelMap[activeSidebar];
+        return channel ? renderChannel(channel) : null;
+      }
    }
  };

@@ -177,6 +213,7 @@ function DSP408Panel({ dsp, api }: { dsp: DSP408; api: DSP408Api }) {
          selectedAppId={presets[selectedPreset]?.id}
          onAppChange={onAppChange}
          onAppRename={api.setCurrentPresetName}
+          onItemRename={onItemRename}
          expanded={sidebarExpanded}
          onToggle={() => setSidebarExpanded((v) => !v)}
        />
@@ -188,6 +225,15 @@ function DSP408Panel({ dsp, api }: { dsp: DSP408; api: DSP408Api }) {
        >
          <div className="dsp-content">{renderTab()}</div>
        </LoadingOverlay>
+
+
+      {dsp.passwordRequired && (
+        <PasswordDialog
+          name={dsp.name}
+          onSubmit={(pw: string) => api.connectWithPassword(pw)}
+          onCancel={() => api.cancelPassword()}
+        />
+      )}
    </div>
  );
 }
@@ -19,13 +19,18 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .delay-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
+  justify-content: center;
 }

 .delay-panel {
@@ -86,6 +91,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .delay-graph-panel {
@@ -6,7 +6,7 @@ import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
 import { LinearGraph } from '../../../../components/LinearGraph/LinearGraph';
 import { useMemo, useState } from 'react';
 import './DelaySection.css';
-import { DELAY_RANGES } from '../../types';
+import { DELAY_RANGES } from '../../constants';

 const UNIT_LABEL: Record<DelayUnit, string> = {
  [DelayUnit.Millisecond]: 'ms',
@@ -79,6 +79,7 @@ function DelayGraph({
  unit: DelayUnit;
 }) {
  const [min, max] = DELAY_RANGES[unit];
+  const roundedMax = (Math.floor(max / 100) + 1) * 100;
  const labelByX = useMemo(() => {
    const map = new Map<number, string>();
    rows.forEach((row, i) => map.set(i + 1, row.label));
@@ -93,7 +94,7 @@ function DelayGraph({
        xMax={rows.length + 0.5}
        xStep={1}
        yMin={min}
-        yMax={max}
+        yMax={roundedMax}
        xLabel="Channel"
        yLabel={UNIT_LABEL[unit]}
        showGrid={true}
@@ -19,11 +19,14 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+  user-select: none;
+  -webkit-user-select: none;
 }

 .gain-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
 }
@@ -74,6 +77,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .gain-graph-panel {
@@ -103,3 +109,121 @@
  flex: 1;
  min-height: 0;
 }
+
+.gain-graph-title-row {
+  flex: 0 0 auto;
+
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+
+  gap: 0.75cqh;
+  padding: 1cqh 1.5cqh;
+
+  min-width: 0;
+  overflow: hidden;
+}
+
+/* First row: title left, Show stages right */
+.gain-graph-title-line {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+
+  width: 100%;
+  min-width: 0;
+  gap: 1cqh;
+}
+
+.gain-graph-title-line .gain-graph-title {
+  flex: 1 1 auto;
+  min-width: 0;
+
+  padding: 0;
+
+  text-align: left;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* Compact button on the right */
+.gain-stages-toggle {
+  flex: 0 0 auto;
+
+  width: auto !important;
+  min-width: max-content;
+
+  padding: 0.4cqh 1cqh;
+  font-size: 1.8cqh;
+  line-height: 1.2;
+
+  white-space: nowrap;
+}
+
+/* Channel Selector */
+.magnitude-selector {
+  width: 100%;
+  min-width: 0;
+
+  display: flex;
+  align-items: center;
+  flex-wrap: nowrap;
+
+  gap: 0.5cqh;
+
+  overflow: hidden;
+  user-select: none;
+  -webkit-user-select: none;
+}
+
+.magnitude-selector__chip {
+  flex: 0 1 auto;
+  min-width: 0;
+
+  display: flex;
+  align-items: center;
+
+  gap: 0.6cqh;
+
+  font-family: var(--font-ui);
+  font-size: 1.8cqh;
+
+  padding: 0.4cqh 1cqh;
+
+  background: var(--bg-void);
+  color: var(--text-muted);
+
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+
+  cursor: pointer;
+  opacity: 0.5;
+
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.magnitude-selector__chip.active {
+  opacity: 1;
+  color: var(--text-primary);
+  border-color: var(--chip-color);
+}
+
+.magnitude-selector__swatch {
+  width: 1.2cqh;
+  height: 1.2cqh;
+
+  border-radius: 50%;
+  background: var(--chip-color);
+
+  flex: 0 0 auto;
+}
+
+.magnitude-selector__label {
+  min-width: 0;
+
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
@@ -1,10 +1,195 @@
 import VerticalSlider from '../../../../components/VerticalSlider/VerticalSlider';
-import { InputChannel, Channel, OutputChannel } from '../../types';
+import { InputChannel, Channel, OutputChannel, CrossoverFilter, PEQBand, PEQ } from '../../types';
 import { DSP408 as DSP } from '../../../../types';
 import Button from '../../../../components/Button/Button';
 import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
-import { LinearGraph } from '../../../../components/LinearGraph/LinearGraph';
 import './GainSection.css';
+import {
+  GEQ_BANDS_LABEL,
+  GRAPH_X_MAX,
+  GRAPH_X_MIN,
+  GRAPH_Y_MAX,
+  GRAPH_Y_MIN,
+  INPUT_ORDER,
+  OUTPUT_ORDER,
+} from '../../constants';
+import { useState } from 'react';
+import LinearGraph from '../../../../components/LinearGraph/LinearGraph';
+import { drawCurves } from '../../utils/graph/draw';
+import { Curve, CurvePoint, sumCurvePoints } from '../../utils/graph/curve';
+import { getGeqCurvePoints } from '../../utils/graph/geq';
+import { getPeqCurvePoints } from '../../utils/graph/peq';
+import { getCrossoverCurvePoints } from '../../utils/graph/crossover';
+import { logSpace } from '../../utils/graph/curve';
+
+const CHANNEL_COLORS = [
+  '#4ade80',
+  '#60a5fa',
+  '#f472b6',
+  '#fbbf24',
+  '#a78bfa',
+  '#34d399',
+  '#f87171',
+  '#38bdf8',
+];
+
+const GEQ_CURVE_Q = 5;
+const Y_AXIS_STEP = 3; // must match the graph's yStep
+
+function buildColorMap<T extends string>(channels: T[]): Record<T, string> {
+  const map = {} as Record<T, string>;
+  channels.forEach((ch, i) => {
+    map[ch] = CHANNEL_COLORS[i % CHANNEL_COLORS.length];
+  });
+  return map;
+}
+
+// ---- Curve construction -----------------------------------------------
+
+type ChannelCurves = {
+  geq: CurvePoint[];
+  peqCrossover: CurvePoint[];
+  total: CurvePoint[];
+};
+
+function getGainCurvePoints(freqs: number[], gainDb: number): CurvePoint[] {
+  return freqs.map((x) => ({ x, y: gainDb }));
+}
+
+function getPeqCrossoverPoints(
+  freqs: number[],
+  peqChain: {
+    bypass: boolean;
+    bands: Record<PEQBand, PEQ>;
+  },
+  crossover: {
+    high_pass: { frequency: number; slope: CrossoverFilter };
+    low_pass: { frequency: number; slope: CrossoverFilter };
+  }
+) {
+  return sumCurvePoints([
+    ...(peqChain.bypass
+      ? []
+      : [
+          getPeqCurvePoints({
+            freqs,
+            bands: peqChain.bands,
+          }),
+        ]),
+    getCrossoverCurvePoints({
+      freqs,
+      highPass: {
+        frequency: crossover.high_pass.frequency,
+        filter_type: crossover.high_pass.slope,
+      },
+      lowPass: {
+        frequency: crossover.low_pass.frequency,
+        filter_type: crossover.low_pass.slope,
+      },
+    }),
+  ]);
+}
+
+function getInputChannelCurves(
+  state: DSP['state']['current_config']['input_states'][InputChannel],
+  freqs: number[],
+  liveGain: number | undefined
+): ChannelCurves {
+  const gain = liveGain ?? state.gain;
+
+  const geqValues = GEQ_BANDS_LABEL.map(({ frequency }) => state.geq.gains[frequency] ?? 0);
+
+  const geq = state.geq.bypass
+    ? []
+    : getGeqCurvePoints({
+        freqs,
+        values: geqValues,
+        q: GEQ_CURVE_Q,
+      });
+
+  const peqCrossover = getPeqCrossoverPoints(freqs, state.peq_chain, state.crossover);
+
+  const total = sumCurvePoints([geq, peqCrossover, getGainCurvePoints(freqs, gain)]);
+
+  return { geq, peqCrossover, total };
+}
+
+function getOutputChannelCurves(
+  state: DSP['state']['current_config']['output_states'][OutputChannel],
+  freqs: number[],
+  liveGain: number | undefined
+): ChannelCurves {
+  const gain = liveGain ?? state.gain;
+  const peqCrossover = getPeqCrossoverPoints(freqs, state.peq_chain, state.crossover);
+  const total = sumCurvePoints([peqCrossover, getGainCurvePoints(freqs, gain)]);
+
+  return { geq: [], peqCrossover, total };
+}
+
+// fill:false everywhere — with multiple overlapping curves the fill/fade
+// just muddies things; stroke-only makes each channel/stage legible.
+function buildCurvesForChannels<T extends string>(
+  channels: T[],
+  selected: Set<T>,
+  colors: Record<T, string>,
+  showStages: boolean,
+  getCurves: (channel: T) => ChannelCurves
+): Curve[] {
+  const curves: Curve[] = [];
+
+  [...channels].reverse().forEach((channel) => {
+    if (!selected.has(channel)) return;
+    const { geq, peqCrossover, total } = getCurves(channel);
+    const color = colors[channel];
+
+    if (showStages) {
+      if (geq.length > 0) {
+        curves.push({
+          points: geq,
+          style: { strokeColor: color, fill: false, dimmed: true, lineWidth: 1 },
+        });
+      }
+      if (peqCrossover.length > 0) {
+        curves.push({
+          points: peqCrossover,
+          style: { strokeColor: color, fill: false, dimmed: true, lineWidth: 1 },
+        });
+      }
+    }
+
+    curves.push({ points: total, style: { strokeColor: color, fill: false, lineWidth: 2 } });
+  });
+
+  return curves;
+}
+
+// Expands [baseMin, baseMax] outward to fit whatever the curves actually
+// contain (e.g. gain + geq + peq stacking past the nominal graph range),
+// snapped to the axis step with one step of headroom so nothing touches
+// the plot edge. Never shrinks below the base range.
+function computeYAxisBounds(
+  curves: Curve[],
+  baseMin: number,
+  baseMax: number,
+  step: number
+): { yMin: number; yMax: number } {
+  let dataMax = baseMax;
+  let dataMin = baseMin;
+
+  for (const curve of curves) {
+    for (const { y } of curve.points) {
+      if (y > dataMax) dataMax = y;
+      if (y < dataMin) dataMin = y;
+    }
+  }
+
+  const yMax = Math.ceil((dataMax + step) / step) * step;
+  const yMin = Math.floor((dataMin - step) / step) * step;
+
+  return { yMin, yMax };
+}
+
+// ---- Panels -------------------------------------------------------------

 function GainPanel({
  dsp,
@@ -13,6 +198,7 @@ function GainPanel({
  setGain,
  setMute,
  setInverse,
+  onLiveGain,
 }: {
  dsp: DSP;
  channel: Channel;
@@ -20,6 +206,7 @@ function GainPanel({
  setGain: (channel: Channel, gain: number) => Promise<boolean>;
  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
+  onLiveGain: (value: number | null) => void;
 }) {
  const channelState =
    'Input' in channel
@@ -38,6 +225,18 @@ function GainPanel({
    await setInverse(channel, !inverted);
  };

+  const handleLiveValue = (value: number) => {
+    onLiveGain(value);
+  };
+
+  const commitGain = async (value: number) => {
+    const success = await setGain(channel, value);
+    if (success) {
+      onLiveGain(null);
+    }
+    return success;
+  };
+
  return (
    <div className="gain-panel">
      <div className="gain-panel__title">{title}</div>
@@ -48,7 +247,9 @@ function GainPanel({
        step={(v) => (v >= -20 ? 0.1 : 0.5)}
        unit=" dB"
        value={gain}
-        onChange={(value) => setGain(channel, value)}
+        formatValue={(v, d) => (v > 0 ? `+${v.toFixed(d)}` : v.toFixed(d))}
+        onInput={handleLiveValue}
+        onChange={commitGain}
      />

      <Button
@@ -87,6 +288,41 @@ function GainPanel({
  );
 }

+function ChannelSelector<T extends string>({
+  channels,
+  labels,
+  colors,
+  selected,
+  onToggle,
+}: {
+  channels: T[];
+  labels: Record<T, string>;
+  colors: Record<T, string>;
+  selected: Set<T>;
+  onToggle: (channel: T) => void;
+}) {
+  return (
+    <div className="magnitude-selector">
+      {channels.map((channel) => {
+        const isOn = selected.has(channel);
+        return (
+          <button
+            key={channel}
+            type="button"
+            className={`magnitude-selector__chip${isOn ? ' active' : ''}`}
+            style={{ '--chip-color': colors[channel] } as React.CSSProperties}
+            onClick={() => onToggle(channel)}
+            title={labels[channel]}
+          >
+            <span className="magnitude-selector__swatch" />
+            <span className="magnitude-selector__label">{labels[channel]}</span>
+          </button>
+        );
+      })}
+    </div>
+  );
+}
+
 function GainSection({
  dsp,
  setGain,
@@ -98,70 +334,218 @@ function GainSection({
  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
 }) {
-  const inputs: InputChannel[] = [
-    InputChannel.InA,
-    InputChannel.InB,
-    InputChannel.InC,
-    InputChannel.InD,
-  ];
+  const inputColors = buildColorMap(INPUT_ORDER);
+  const outputColors = buildColorMap(OUTPUT_ORDER);

-  const outputs: { channel: Channel; title: string }[] = [
-    { channel: { Output: OutputChannel.Out1 }, title: 'Out 1' },
-    { channel: { Output: OutputChannel.Out2 }, title: 'Out 2' },
-    { channel: { Output: OutputChannel.Out3 }, title: 'Out 3' },
-    { channel: { Output: OutputChannel.Out4 }, title: 'Out 4' },
-    { channel: { Output: OutputChannel.Out5 }, title: 'Out 5' },
-    { channel: { Output: OutputChannel.Out6 }, title: 'Out 6' },
-    { channel: { Output: OutputChannel.Out7 }, title: 'Out 7' },
-    { channel: { Output: OutputChannel.Out8 }, title: 'Out 8' },
-  ];
+  const [selectedInputs, setSelectedInputs] = useState<Set<InputChannel>>(new Set(INPUT_ORDER));
+  const [selectedOutputs, setSelectedOutputs] = useState<Set<OutputChannel>>(new Set(OUTPUT_ORDER));
+
+  const [showInputStages, setShowInputStages] = useState(false);
+  const [showOutputStages, setShowOutputStages] = useState(false);
+
+  const [liveInputGains, setLiveInputGains] = useState<Partial<Record<InputChannel, number>>>({});
+  const [liveOutputGains, setLiveOutputGains] = useState<Partial<Record<OutputChannel, number>>>(
+    {}
+  );
+
+  const setLiveInputGain = (channel: InputChannel, value: number | null) => {
+    setLiveInputGains((prev) => {
+      if (value === null) {
+        const next = { ...prev };
+        delete next[channel];
+        return next;
+      }
+      return { ...prev, [channel]: value };
+    });
+  };
+
+  const setLiveOutputGain = (channel: OutputChannel, value: number | null) => {
+    setLiveOutputGains((prev) => {
+      if (value === null) {
+        const next = { ...prev };
+        delete next[channel];
+        return next;
+      }
+      return { ...prev, [channel]: value };
+    });
+  };
+
+  const inputLabels: Record<InputChannel, string> = INPUT_ORDER.reduce(
+    (acc, channel) => ({
+      ...acc,
+      [channel]: dsp.state.current_config.input_states[channel].name,
+    }),
+    {} as Record<InputChannel, string>
+  );
+
+  const outputLabels: Record<OutputChannel, string> = OUTPUT_ORDER.reduce(
+    (acc, channel) => ({
+      ...acc,
+      [channel]: dsp.state.current_config.output_states[channel].name,
+    }),
+    {} as Record<OutputChannel, string>
+  );
+
+  const toggleInput = (channel: InputChannel) => {
+    setSelectedInputs((prev) => {
+      const next = new Set(prev);
+      next.has(channel) ? next.delete(channel) : next.add(channel);
+      return next;
+    });
+  };
+
+  const toggleOutput = (channel: OutputChannel) => {
+    setSelectedOutputs((prev) => {
+      const next = new Set(prev);
+      next.has(channel) ? next.delete(channel) : next.add(channel);
+      return next;
+    });
+  };
+
+  const freqs = logSpace(GRAPH_X_MIN, GRAPH_X_MAX, 1000);
+
+  const inputCurves = buildCurvesForChannels(
+    INPUT_ORDER,
+    selectedInputs,
+    inputColors,
+    showInputStages,
+    (channel) =>
+      getInputChannelCurves(
+        dsp.state.current_config.input_states[channel],
+        freqs,
+        liveInputGains[channel]
+      )
+  );
+
+  const outputCurves = buildCurvesForChannels(
+    OUTPUT_ORDER,
+    selectedOutputs,
+    outputColors,
+    showOutputStages,
+    (channel) =>
+      getOutputChannelCurves(
+        dsp.state.current_config.output_states[channel],
+        freqs,
+        liveOutputGains[channel]
+      )
+  );
+
+  const { yMin: inputYMin, yMax: inputYMax } = computeYAxisBounds(
+    inputCurves,
+    GRAPH_Y_MIN,
+    12,
+    Y_AXIS_STEP
+  );
+  const { yMin: outputYMin, yMax: outputYMax } = computeYAxisBounds(
+    outputCurves,
+    GRAPH_Y_MIN,
+    GRAPH_Y_MAX,
+    Y_AXIS_STEP
+  );

  return (
    <>
      <div className="gain-linear-graph-section">
        <div className="gain-graph-panel">
-          <div className="gain-graph-title">Frequency Response</div>
+          <div className="gain-graph-title-row">
+            <div className="gain-graph-title-line">
+              <div className="gain-graph-title">Input Response</div>
+              <Button
+                variant="toggle"
+                className={`gain-stages-toggle ${showInputStages ? 'active-info' : ''}`}
+                onClick={() => setShowInputStages((v) => !v)}
+              >
+                Show stages
+              </Button>
+            </div>
+            <ChannelSelector
+              channels={INPUT_ORDER}
+              labels={inputLabels}
+              colors={inputColors}
+              selected={selectedInputs}
+              onToggle={toggleInput}
+            />
+          </div>
          <LinearGraph
-            xMin={10}
-            xMax={30000}
+            xMin={GRAPH_X_MIN}
+            xMax={GRAPH_X_MAX}
            xScale="log"
-            yMin={-18}
-            yMax={18}
-            yStep={3}
+            yMin={inputYMin}
+            yMax={inputYMax}
+            yStep={Y_AXIS_STEP}
            xLabel="Hz"
            yLabel="dB"
+            showGrid={true}
+            formatX={(v) => Math.round(v).toString()}
+            formatY={(v) => {
+              // Always label 0.
+              if (v === 0) return '0';
+
+              // Positive side: label every 12 dB.
+              if (v > 0) {
+                return v % 12 === 0 ? `+${Math.round(v)}` : '';
+              }
+
+              // Negative side: label every 15 dB.
+              return Math.abs(v) % 15 === 0 ? Math.round(v).toString() : '';
+            }}
            draw={({ ctx, toPx }) => {
-              ctx.strokeStyle = '#4ade80';
-              ctx.lineWidth = 2;
-              const [x0, y0] = toPx(20, 0);
-              const [x1, y1] = toPx(20000, 0);
-              ctx.beginPath();
-              ctx.moveTo(x0, y0);
-              ctx.lineTo(x1, y1);
-              ctx.stroke();
+              drawCurves({
+                ctx,
+                toPx,
+                xMin: GRAPH_X_MIN,
+                xMax: GRAPH_X_MAX,
+                yMin: inputYMin,
+                yMax: inputYMax,
+                curves: inputCurves,
+              });
            }}
          />
        </div>

        <div className="gain-graph-panel">
-          <div className="gain-graph-title">Phase Response</div>
+          <div className="gain-graph-title-row">
+            <div className="gain-graph-title-line">
+              <div className="gain-graph-title">Output Response</div>
+              <Button
+                variant={showOutputStages ? 'outline' : 'ghost'}
+                className="gain-stages-toggle"
+                onClick={() => setShowOutputStages((v) => !v)}
+              >
+                Show stages
+              </Button>
+            </div>
+
+            <ChannelSelector
+              channels={OUTPUT_ORDER}
+              labels={outputLabels}
+              colors={outputColors}
+              selected={selectedOutputs}
+              onToggle={toggleOutput}
+            />
+          </div>
          <LinearGraph
-            xMin={20}
-            xMax={20000}
-            yMin={-180}
-            yMax={180}
-            yStep={45}
+            xMin={GRAPH_X_MIN}
+            xMax={GRAPH_X_MAX}
+            xScale="log"
+            yMin={outputYMin}
+            yMax={outputYMax}
+            yStep={Y_AXIS_STEP}
            xLabel="Hz"
-            yLabel="deg"
+            yLabel="dB"
+            showGrid={true}
+            formatX={(v) => Math.round(v).toString()}
+            formatY={(v) => Math.round(v).toString()}
            draw={({ ctx, toPx }) => {
-              ctx.strokeStyle = '#4ade80';
-              ctx.lineWidth = 2;
-              const [x0, y0] = toPx(20, 0);
-              const [x1, y1] = toPx(20000, 0);
-              ctx.beginPath();
-              ctx.moveTo(x0, y0);
-              ctx.lineTo(x1, y1);
-              ctx.stroke();
+              drawCurves({
+                ctx,
+                toPx,
+                xMin: GRAPH_X_MIN,
+                xMax: GRAPH_X_MAX,
+                yMin: outputYMin,
+                yMax: outputYMax,
+                curves: outputCurves,
+              });
            }}
          />
        </div>
@@ -170,7 +554,7 @@ function GainSection({
      <div className="gain-section">
        <div className="gain-panels">
          <ChannelGroup title="Input">
-            {inputs.map((channel) => (
+            {INPUT_ORDER.map((channel) => (
              <GainPanel
                key={channel}
                dsp={dsp}
@@ -179,20 +563,22 @@ function GainSection({
                setGain={setGain}
                setMute={setMute}
                setInverse={setInverse}
+                onLiveGain={(value) => setLiveInputGain(channel, value)}
              />
            ))}
          </ChannelGroup>

          <ChannelGroup title="Output">
-            {outputs.map(({ channel, title }) => (
+            {OUTPUT_ORDER.map((channel) => (
              <GainPanel
-                key={title}
+                key={channel}
                dsp={dsp}
-                channel={channel}
-                title={title}
+                channel={{ Output: channel }}
+                title={dsp.state.current_config.output_states[channel].name}
                setGain={setGain}
                setMute={setMute}
                setInverse={setInverse}
+                onLiveGain={(value) => setLiveOutputGain(channel, value)}
              />
            ))}
          </ChannelGroup>
@@ -7,7 +7,7 @@
  right: 0;
  bottom: 0;

-  height: 40%;
+  height: var(--dsp-control-heigth);

  display: flex;
  align-items: flex-end;
@@ -20,13 +20,18 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .gate-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
+  justify-content: center;
 }

 .gate-panel {
@@ -104,6 +109,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .gate-graph-panel {
@@ -15,13 +15,6 @@ const GATE_PARAMS = [
  { key: 'release', label: 'Release', min: 10, max: 3000, step: 1, unit: ' ms' },
 ] as const;

-const INPUT_METER_INDEX: Record<InputChannel, number> = {
-  [InputChannel.InA]: 0,
-  [InputChannel.InB]: 1,
-  [InputChannel.InC]: 2,
-  [InputChannel.InD]: 3,
-} as const;
-
 type GateParamKey = (typeof GATE_PARAMS)[number]['key'];

 type GateValues = {
@@ -139,8 +132,8 @@ function GateSection({ dsp, set_gate }: { dsp: DSP; set_gate: SetGateFn }) {
          <LinearGraph
            xMin={envelope.t0}
            xMax={envelope.t5}
-            yMin={-90}
-            yMax={0}
+            yMin={-95}
+            yMax={5}
            xLabel="ms"
            yLabel="dB"
            formatX={(v) => Math.round(v).toString()}
@@ -185,9 +178,14 @@ function GateSection({ dsp, set_gate }: { dsp: DSP; set_gate: SetGateFn }) {
          <div className="gate-graph__meters">
            {inputs.map((input) => {
              const inputState = dsp.state.current_config.input_states[input];
-              const idx = INPUT_METER_INDEX[input];
-              const meter = dsp.meters.channels[idx];
-              return <MeterBar label={inputState.name} meter={meter} />;
+
+              return (
+                <MeterBar
+                  key={input}
+                  label={inputState.name}
+                  meter={dsp.input_meters.meters[input]}
+                />
+              );
            })}
          </div>
        </div>
@@ -19,13 +19,18 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .geq-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
+  justify-content: center;
 }

 .geq-band-panel {
@@ -112,6 +117,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .geq-graph-panel {
@@ -141,3 +149,29 @@
  flex: 1;
  min-height: 0;
 }
+
+.geq-graph-canvas-wrap {
+  position: relative;
+}
+
+.geq-bypass-overlay {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  pointer-events: none;
+  z-index: 2;
+  padding-bottom: 40cqh;
+}
+
+.geq-bypass-overlay span {
+  font-size: 8cqh;
+  font-weight: 800;
+  letter-spacing: 0.15em;
+  color: #f87171;
+  text-shadow: 0 0 12px rgba(0, 0, 0, 0.6);
+  transform: rotate(-8deg);
+  opacity: 0.85;
+  user-select: none;
+}
@@ -4,53 +4,23 @@ import { DSP408 as DSP } from '../../../../types';
 import Button from '../../../../components/Button/Button';
 import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
 import { LinearGraph } from '../../../../components/LinearGraph/LinearGraph';
-import { useMemo, useState } from 'react';
+import { drawCurves } from '../../utils/graph/draw';
+import {
+  INPUT_ORDER,
+  GRAPH_X_MIN,
+  GRAPH_X_MAX,
+  GRAPH_Y_MIN,
+  GRAPH_Y_MAX,
+  GEQ_GAIN_MIN,
+  GEQ_GAIN_MAX,
+  GEQ_GAIN_STEP,
+  GEQ_BANDS_LABEL,
+  GEQ_CURVE_Q,
+} from '../../constants';
+import { useState, useEffect } from 'react';
 import './GeqSection.css';
-
-const GEQ_BANDS = [
-  { frequency: DiscreteFrequency.F20, label: '20' },
-  { frequency: DiscreteFrequency.F25, label: '25' },
-  { frequency: DiscreteFrequency.F31_5, label: '31.5' },
-  { frequency: DiscreteFrequency.F40, label: '40' },
-  { frequency: DiscreteFrequency.F50, label: '50' },
-  { frequency: DiscreteFrequency.F63, label: '63' },
-  { frequency: DiscreteFrequency.F80, label: '80' },
-  { frequency: DiscreteFrequency.F100, label: '100' },
-  { frequency: DiscreteFrequency.F125, label: '125' },
-  { frequency: DiscreteFrequency.F160, label: '160' },
-  { frequency: DiscreteFrequency.F200, label: '200' },
-  { frequency: DiscreteFrequency.F250, label: '250' },
-  { frequency: DiscreteFrequency.F315, label: '315' },
-  { frequency: DiscreteFrequency.F400, label: '400' },
-  { frequency: DiscreteFrequency.F500, label: '500' },
-  { frequency: DiscreteFrequency.F630, label: '630' },
-  { frequency: DiscreteFrequency.F800, label: '800' },
-  { frequency: DiscreteFrequency.F1000, label: '1k' },
-  { frequency: DiscreteFrequency.F1250, label: '1.25k' },
-  { frequency: DiscreteFrequency.F1600, label: '1.6k' },
-  { frequency: DiscreteFrequency.F2000, label: '2k' },
-  { frequency: DiscreteFrequency.F2500, label: '2.5k' },
-  { frequency: DiscreteFrequency.F3150, label: '3.15k' },
-  { frequency: DiscreteFrequency.F4000, label: '4k' },
-  { frequency: DiscreteFrequency.F5000, label: '5k' },
-  { frequency: DiscreteFrequency.F6300, label: '6.3k' },
-  { frequency: DiscreteFrequency.F8000, label: '8k' },
-  { frequency: DiscreteFrequency.F10000, label: '10k' },
-  { frequency: DiscreteFrequency.F12500, label: '12.5k' },
-  { frequency: DiscreteFrequency.F16000, label: '16k' },
-  { frequency: DiscreteFrequency.F20000, label: '20k' },
-] as const;
-
-const GEQ_GAIN_MIN = -12;
-const GEQ_GAIN_MAX = 12;
-const GEQ_GAIN_STEP = 0.1;
-
-const INPUT_ORDER: InputChannel[] = [
-  InputChannel.InA,
-  InputChannel.InB,
-  InputChannel.InC,
-  InputChannel.InD,
-];
+import { getGeqCurvePoints } from '../../utils/graph/geq';
+import { logSpace } from '../../utils/graph/curve';

 type LiveBands = Partial<Record<DiscreteFrequency, number>>;

@@ -78,7 +48,7 @@ function GeqBandPanel({

  return (
    <div className="geq-band-panel">
-      {GEQ_BANDS.map(({ frequency, label }) => (
+      {GEQ_BANDS_LABEL.map(({ frequency, label }) => (
        <div className="geq-band-cell" key={frequency}>
          <VerticalSlider
            min={GEQ_GAIN_MIN}
@@ -112,45 +82,47 @@ function GeqGraph({
 }) {
  const geq = dsp.state.current_config.input_states[channel].geq;

-  const labelByX = useMemo(() => {
-    const map = new Map<number, string>();
-    GEQ_BANDS.forEach((band, i) => map.set(i + 1, band.label));
-    return map;
-  }, []);
-
-  const values = GEQ_BANDS.map(
+  const values = GEQ_BANDS_LABEL.map(
    ({ frequency }) => liveBands?.[frequency] ?? geq.gains[frequency] ?? 0
  );
+  const freqs = logSpace(GRAPH_X_MIN, GRAPH_X_MAX, 1000);

  return (
    <div className="geq-graph-panel">
      <div className="geq-graph-title">{title}</div>
      <LinearGraph
-        xMin={0.5}
-        xMax={GEQ_BANDS.length + 0.5}
-        xStep={1}
-        yMin={GEQ_GAIN_MIN}
-        yMax={GEQ_GAIN_MAX}
+        xMin={GRAPH_X_MIN}
+        xMax={GRAPH_X_MAX}
+        xScale="log"
+        yMin={GRAPH_Y_MIN}
+        yMax={GRAPH_Y_MAX}
+        yStep={3}
        xLabel="Band Hz"
        yLabel="dB"
        showGrid={true}
-        formatX={(v) => labelByX.get(Math.round(v)) ?? ''}
-        formatY={(v) => v.toFixed(0)}
-        draw={({ ctx, toPx, plot }) => {
-          const barWidth = (plot.width / GEQ_BANDS.length) * 0.6;
+        draw={({ ctx, toPx }) => {
+          drawCurves({
+            ctx,
+            toPx,

-          values.forEach((gain, i) => {
-            const x = i + 1;
-            const [xPx, zeroY] = toPx(x, 0);
-            const [, gainY] = toPx(x, gain);
-
-            ctx.fillStyle = gain >= 0 ? '#4ade80' : '#f87171';
-            const top = Math.min(zeroY, gainY);
-            const height = Math.abs(gainY - zeroY);
-            ctx.fillRect(xPx - barWidth / 2, top, barWidth, height);
+            xMin: GRAPH_X_MIN,
+            xMax: GRAPH_X_MAX,
+            yMin: GRAPH_Y_MIN,
+            yMax: GRAPH_Y_MAX,
+            curves: [
+              {
+                points: getGeqCurvePoints({ freqs, values, q: GEQ_CURVE_Q }),
+                style: { strokeColor: '#e5e7eb', dimmed: geq.bypass },
+              },
+            ],
          });
        }}
      />
+      {geq.bypass && (
+        <div className="geq-bypass-overlay">
+          <span>BYPASSED</span>
+        </div>
+      )}
    </div>
  );
 }
@@ -203,7 +175,7 @@ function GeqActions({
    <div className="geq-channel-selector">
      <Button
        variant="toggle"
-        className={bypass ? 'active-info' : ''}
+        className={bypass ? 'active-warning' : ''}
        onClick={onBypass}
        style={{
          width: '100%',
@@ -229,7 +201,7 @@ function GeqActions({
          minHeight: 0,
        }}
      >
-        {resetting ? 'Resetting…' : 'Reset'} {/* NEW */}
+        {resetting ? 'Resetting…' : 'Reset'}
      </Button>
    </div>
  );
@@ -246,7 +218,21 @@ function GeqSection({
 }) {
  const [activeChannel, setActiveChannel] = useState<InputChannel>(INPUT_ORDER[0]);
  const [liveGeq, setLiveGeq] = useState<Partial<Record<InputChannel, LiveBands>>>({});
-  const [resetting, setResetting] = useState(false); // NEW
+  const [resetting, setResetting] = useState(false);
+  const [isResetConfirmOpen, setIsResetConfirmOpen] = useState(false);
+
+  useEffect(() => {
+    if (!isResetConfirmOpen) return;
+
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        setIsResetConfirmOpen(false);
+      }
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, [isResetConfirmOpen]);

  const handleLiveValue = (channel: InputChannel, band: DiscreteFrequency, value: number) => {
    setLiveGeq((prev) => ({
@@ -269,12 +255,20 @@ function GeqSection({
    return success;
  };

-  // NEW: sequential per-band reset, since hardware has no bulk reset command.
+  const handleBypassClick = () => {
+    setGeqBypass(activeChannel, !activeGeq.bypass);
+  };
+
+  const handleResetClick = () => {
+    setIsResetConfirmOpen(true);
+  };
+
+  // Sequential per-band reset, since hardware has no bulk reset command.
  const handleReset = async (channel: InputChannel) => {
    if (resetting) return;
    setResetting(true);

-    for (const { frequency } of GEQ_BANDS) {
+    for (const { frequency } of GEQ_BANDS_LABEL) {
      // Skip bands already at 0 to save a round trip.
      const current = dsp.state.current_config.input_states[channel].geq.gains[frequency] ?? 0;
      if (current === 0) continue;
@@ -285,14 +279,15 @@ function GeqSection({
    setResetting(false);
  };

+  const confirmReset = async () => {
+    setIsResetConfirmOpen(false);
+    await handleReset(activeChannel);
+  };
+
  const activeInputState = dsp.state.current_config.input_states[activeChannel];
  const activeGeq = activeInputState.geq;
  const activeLiveBands = liveGeq[activeChannel];

-  const handleBypassClick = () => {
-    setGeqBypass(activeChannel, !activeGeq.bypass);
-  };
-
  const channelOptions = INPUT_ORDER.map((channel) => ({
    channel,
    label: dsp.state.current_config.input_states[channel].name,
@@ -334,12 +329,33 @@ function GeqSection({
                bypass={activeGeq.bypass}
                resetting={resetting}
                onBypass={handleBypassClick}
-                onReset={() => handleReset(activeChannel)}
+                onReset={handleResetClick}
              />
            </ChannelGroup>
          </div>
        </div>
      </div>
+
+      {isResetConfirmOpen && (
+        <div className="confirm-modal-overlay" onClick={() => setIsResetConfirmOpen(false)}>
+          <div className="confirm-modal" onClick={(e) => e.stopPropagation()}>
+            <h3>Reset {activeInputState.name} GEQ?</h3>
+            <p>
+              This will set all GEQ bands on {activeInputState.name} back to 0 dB. This action
+              cannot be undone.
+            </p>
+
+            <div className="confirm-modal__actions">
+              <Button variant="outline" onClick={() => setIsResetConfirmOpen(false)}>
+                Cancel
+              </Button>
+              <Button variant="primary" onClick={confirmReset}>
+                Reset
+              </Button>
+            </div>
+          </div>
+        </div>
+      )}
    </>
  );
 }
@@ -1,504 +0,0 @@
-// InputSection.tsx
-import VerticalSlider from '../../../../components/VerticalSlider/VerticalSlider';
-// ASSUMPTION: an InputChannel enum exists alongside OutputChannel, mapping
-// input pages 1-8 similarly (In1 -> 0, In2 -> 1, ...). Adjust import/values
-// if the actual enum differs.
-import { InputChannel, Channel, PEQBand, PEQFilter, PEQ, Meter } from '../../types';
-import { DSP408 as DSP } from '../../../../types';
-import { CrossoverFilter } from '../../types';
-import { LinearGraph } from '../../../../components/LinearGraph/LinearGraph';
-import { useRef, useState } from 'react';
-import './InputSection.css';
-import ChannelGroup from '../../../../components/ChannelGroup/ChannelGroup';
-import Button from '../../../../components/Button/Button';
-import MeterBar from '../../../../components/MeterBar/MeterBar';
-
-const FREQ_MIN = 20;
-const FREQ_MAX = 20000;
-const FREQ_STEP = 1;
-
-const FILTER_TYPE_OPTIONS: { value: CrossoverFilter; label: string }[] = [
-  { value: CrossoverFilter.Bw6, label: 'BW-6' },
-  { value: CrossoverFilter.Bw12, label: 'BW-12' },
-  { value: CrossoverFilter.Bw18, label: 'BW-18' },
-  { value: CrossoverFilter.Bw24, label: 'BW-24' },
-  { value: CrossoverFilter.Bw30, label: 'BW-30' },
-  { value: CrossoverFilter.Bw36, label: 'BW-36' },
-  { value: CrossoverFilter.Bw42, label: 'BW-42' },
-  { value: CrossoverFilter.Bw48, label: 'BW-48' },
-  { value: CrossoverFilter.Lk12, label: 'LR-12' },
-  { value: CrossoverFilter.Lk24, label: 'LR-24' },
-  { value: CrossoverFilter.Lk36, label: 'LR-36' },
-  { value: CrossoverFilter.Lk48, label: 'LR-48' },
-];
-
-const PEQ_SLIDER_PARAMS = [
-  { key: 'frequency', label: 'Frequency', min: 19.7, max: 20160, step: 0.5, unit: ' Hz' },
-  { key: 'q', label: 'Q', min: 1, max: 999, step: 1, unit: '' },
-  { key: 'gain', label: 'Gain', min: -12, max: +12, step: 0.1, unit: ' dB' },
-] as const;
-
-type SetPEQFn = (
-  channel: Channel,
-  band: PEQBand,
-  gainDb: number,
-  freqHz: number,
-  q: number,
-  filterType: PEQFilter,
-  bypass: boolean
-) => Promise<boolean>;
-
-type PeqParamKey = 'frequency' | 'q' | 'gain';
-
-type PEQValues = {
-  frequency: number;
-  q: number;
-  gain: number;
-  filter_type: PEQFilter;
-  bypass: boolean;
-};
-
-function PeqPanelSliders({
-  channel,
-  dsp,
-  band,
-  setPEQ,
-  // onLiveValue,
-}: {
-  channel: InputChannel;
-  dsp: DSP;
-  band: PEQBand;
-  setPEQ: SetPEQFn;
-  // onLiveValue: (channel: InputChannel, key: PeqParamKey, value: number) => void;
-}) {
-  const inputState = dsp.state.current_config.input_states[channel];
-  const peq = inputState.peq_chain.bands[band] as PEQ;
-
-  const commit = (overrides: Partial<PEQValues>) => {
-    const next = { ...peq, ...overrides };
-    return setPEQ(
-      { Input: channel },
-      band,
-      next.gain,
-      next.frequency,
-      next.q,
-      next.filter_type,
-      next.bypass
-    );
-  };
-
-  return (
-    <div className="input-panel">
-      <div className="input-panel__title">{'PEQ Parameters'}</div>
-
-      <div className="input-panel__grid">
-        {PEQ_SLIDER_PARAMS.map((param) => (
-          <div className={`input-panel__cell input-panel__cell--${param.key}`} key={param.key}>
-            <VerticalSlider
-              min={param.min}
-              max={param.max}
-              step={() => param.step}
-              unit={param.unit}
-              value={peq[param.key]}
-              // onInput={(value) => onLiveValue(channel, param.key, value)}
-              onChange={(value) => commit({ [param.key]: value } as Partial<PEQValues>)}
-              style={{ width: '100%', flex: '1 1 auto' }}
-            />
-            <div className="input-panel__cell-label">{param.label}</div>
-          </div>
-        ))}
-      </div>
-    </div>
-  );
-}
-
-function CrossoverPanel({
-  channel,
-  dsp,
-  title,
-  setCrossover,
-}: {
-  channel: Channel;
-  dsp: DSP;
-  title: string;
-  setCrossover: (
-    channel: Channel,
-    frequency: number,
-    filter_type: CrossoverFilter,
-    bypass: boolean
-  ) => Promise<boolean>;
-}) {
-  const channelState =
-    'Input' in channel
-      ? dsp.state?.current_config.input_states[channel.Input]
-      : dsp.state?.current_config.output_states[channel.Output];
-
-  const crossover = channelState?.crossover;
-
-  const frequency = crossover.high_pass.frequency;
-  const filter_type = crossover.high_pass.slope;
-  const bypass = false;
-
-  const commit = (overrides: {
-    frequency?: number;
-    filter_type?: CrossoverFilter;
-    bypass?: boolean;
-  }) => {
-    const next = { frequency, filter_type, bypass, ...overrides };
-    return setCrossover(channel, next.frequency, next.filter_type, next.bypass);
-  };
-
-  return (
-    <div className="crossover-panel">
-      <div className="crossover-panel__title">{title}</div>
-
-      <VerticalSlider
-        min={20}
-        max={20000}
-        step={() => 1}
-        unit=" Hz"
-        value={frequency}
-        onChange={(value) => commit({ frequency: value })}
-        style={{ width: '100%', flex: '1 1 auto' }}
-      />
-
-      <select
-        className="crossover-panel__select"
-        value={filter_type}
-        onChange={(e) => commit({ filter_type: e.target.value as CrossoverFilter })}
-      >
-        {FILTER_TYPE_OPTIONS.map((opt) => (
-          <option key={opt.value} value={opt.value}>
-            {opt.label}
-          </option>
-        ))}
-      </select>
-
-      <Button
-        variant="toggle"
-        className={bypass ? 'active-warning' : ''}
-        onClick={() => commit({ bypass: !bypass })}
-        style={{
-          width: '85%',
-          paddingLeft: 0,
-          paddingRight: 0,
-          fontSize: '4cqh',
-          paddingTop: '2cqh',
-          paddingBottom: '2cqh',
-          minHeight: 0,
-        }}
-      >
-        {bypass ? 'Bypassed' : 'Bypass'}
-      </Button>
-    </div>
-  );
-}
-
-function GainMeterPanel({
-  dsp,
-  channel,
-  title,
-  meter,
-  setGain,
-  setMute,
-  setInverse,
-}: {
-  dsp: DSP;
-  channel: Channel;
-  title: string;
-  meter: Meter;
-  setGain: (channel: Channel, gain: number) => Promise<boolean>;
-  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
-  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
-}) {
-  const channelState =
-    'Input' in channel
-      ? dsp.state?.current_config.input_states[channel.Input]
-      : dsp.state?.current_config.output_states[channel.Output];
-
-  const muted = channelState?.mute ?? false;
-  const inverted = channelState?.phase_inverted ?? false;
-  const gain = channelState?.gain ?? 0;
-
-  const toggleMute = async () => {
-    await setMute(channel, !muted);
-  };
-
-  const toggleInverse = async () => {
-    await setInverse(channel, !inverted);
-  };
-
-  return (
-    <div className="gain-meter-panel">
-      <div className="gain-meter-panel__title">{title}</div>
-
-      <div className="gain-meter-panel__grid">
-        <div className="gain-meter-panel__cell gain-meter-panel__cell--slider">
-          <VerticalSlider
-            min={-60}
-            max={12}
-            step={(v) => (v >= -20 ? 0.1 : 0.5)}
-            unit=" dB"
-            value={gain}
-            onChange={(value) => setGain(channel, value)}
-            style={{ width: '100%', height: '100%' }}
-          />
-        </div>
-
-        <div className="gain-meter-panel__cell gain-meter-panel__cell--meter">
-          <MeterBar label="" meter={meter} />
-        </div>
-
-        <div className="gain-meter-panel__cell gain-meter-panel__cell--btn">
-          <Button
-            variant="toggle"
-            className={inverted ? 'active-warning' : ''}
-            onClick={toggleInverse}
-            style={{
-              width: '100%',
-              paddingLeft: 0,
-              paddingRight: 0,
-              fontSize: '3.5cqh',
-              paddingTop: '1cqh',
-              paddingBottom: '1cqh',
-              minHeight: 0,
-            }}
-          >
-            {inverted ? 'Inverted' : 'Invert'}
-          </Button>
-        </div>
-
-        <div className="gain-meter-panel__cell gain-meter-panel__cell--btn">
-          <Button
-            variant="toggle"
-            className={muted ? 'active-danger' : ''}
-            onClick={toggleMute}
-            style={{
-              width: '100%',
-              paddingLeft: 0,
-              paddingRight: 0,
-              fontSize: '3.5cqh',
-              paddingTop: '1cqh',
-              paddingBottom: '1cqh',
-              minHeight: 0,
-            }}
-          >
-            {muted ? 'Muted' : 'Mute'}
-          </Button>
-        </div>
-      </div>
-    </div>
-  );
-}
-
-type SetFilterFn = (
-  channel: Channel,
-  freq: number,
-  filterType: CrossoverFilter
-) => Promise<boolean>;
-
-type setPeqBandFn = (
-  channel: Channel,
-  band: PEQBand,
-  gainDb: number,
-  freqHz: number,
-  q: number,
-  filterType: PEQFilter,
-  bypass: boolean
-) => Promise<boolean>;
-
-function InputSection({
-  dsp,
-  channel,
-  set_high_pass: setHighPass,
-  set_low_pass,
-  setPeq,
-  // setPeqBypass,
-  setGain,
-  setMute,
-  setInverse,
-}: {
-  dsp: DSP;
-  channel: InputChannel;
-  set_high_pass: SetFilterFn;
-  set_low_pass: SetFilterFn;
-  setPeq: setPeqBandFn;
-  // setPeqBypass;
-  setGain: (channel: Channel, gain: number) => Promise<boolean>;
-  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
-  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
-}) {
-  const [activeBand, setActiveBand] = useState<PEQBand>(PEQBand.B1);
-
-  const [liveHpFreq, setLiveHpFreq] = useState<number>(19.7);
-  const [liveLpFreq, setLiveLpFreq] = useState<number>(20.16);
-  const [livePeq, setLivePeq] = useState<Partial<Record<PEQBand, PEQValues>>>({});
-
-  const inputState = dsp.state.current_config.input_states[channel];
-
-  const hp = inputState.crossover.high_pass;
-  const lp = inputState.crossover.low_pass;
-  const activePeq = livePeq[activeBand] ?? (inputState.peq_chain.bands[activeBand] as PEQValues);
-
-  const bypassed = hp.slope === CrossoverFilter.Bypass;
-  const activeFilterType = bypassed && lp.slope !== CrossoverFilter.Bypass ? lp.slope : hp.slope;
-
-  // Remembers the last non-bypass slope so the Bypass button can restore it.
-  // const lastNonBypassType = useRef<CrossoverFilter>(
-  //   activeFilterType === CrossoverFilter.Bypass ? DEFAULT_FILTER_TYPE : activeFilterType
-  // );
-  // if (activeFilterType !== CrossoverFilter.Bypass) {
-  //   lastNonBypassType.current = activeFilterType;
-  // }
-
-  const hpFreq = liveHpFreq ?? hp.frequency;
-  const lpFreq = liveLpFreq ?? lp.frequency;
-
-  // const commitHighPass = async (freq: number, filterType: CrossoverFilter) => {
-  //   const success = await set_high_pass({ Input: channel }, freq, filterType);
-  //   if (success) setLiveHpFreq(null);
-  //   return success;
-  // };
-
-  // const commitLowPass = async (freq: number, filterType: CrossoverFilter) => {
-  //   const success = await set_low_pass({ Input: channel }, freq, filterType);
-  //   if (success) setLiveLpFreq(null);
-  //   return success;
-  // };
-
-  // const handleFilterTypeChange = (filterType: CrossoverFilter) => {
-  //   // Applying a slope change always takes the crossover out of bypass.
-  //   void commitHighPass(hpFreq, filterType);
-  //   void commitLowPass(lpFreq, filterType);
-  // };
-
-  // const handleBypassToggle = () => {
-  //   if (bypassed) {
-  //     const restore = lastNonBypassType.current;
-  //     void commitHighPass(hpFreq, restore);
-  //     void commitLowPass(lpFreq, restore);
-  //   } else {
-  //     void commitHighPass(hpFreq, CrossoverFilter.Bypass);
-  //     void commitLowPass(lpFreq, CrossoverFilter.Bypass);
-  //   }
-  // };
-
-  return (
-    <>
-      <div className="input-graph-section">
-        <div className="input-graph-panel">
-          <div className="input-graph__title">{inputState.name} - Filters</div>
-
-          {/* TODO: draw HP/LP transfer curves here once filter math is defined,
-              same pattern as LimiterSection's `draw` prop. */}
-          <LinearGraph
-            xMin={20}
-            xMax={20000}
-            yMin={-30}
-            yMax={6}
-            xLabel="Hz"
-            yLabel="dB"
-            formatX={(v) => Math.round(v).toString()}
-            formatY={(v) => Math.round(v).toString()}
-            draw={() => {}}
-          />
-        </div>
-      </div>
-
-      <div className="input-control-section">
-        <div className="input-control-panel">
-          <ChannelGroup title="PEQ">
-            <PeqPanelSliders channel={channel} dsp={dsp} band={PEQBand.B1} setPEQ={setPeq} />
-          </ChannelGroup>
-
-          <ChannelGroup title="CrossOver">
-            <CrossoverPanel
-              channel={{ Input: channel }}
-              dsp={dsp}
-              title="LowPass"
-              setCrossover={setHighPass}
-            />
-            <CrossoverPanel
-              channel={{ Input: channel }}
-              dsp={dsp}
-              title="HighPass"
-              setCrossover={setHighPass}
-            />
-          </ChannelGroup>
-
-          <ChannelGroup title="Gain">
-            <GainMeterPanel
-              dsp={dsp}
-              channel={{ Input: channel }}
-              title={dsp.state.current_config.input_states.InA.name}
-              meter={dsp.meters.channels[0]}
-              setGain={setGain}
-              setMute={setMute}
-              setInverse={setInverse}
-            />
-          </ChannelGroup>
-          {/* <div className="input-control-panel__sliders">
-            <div className="input-control-panel__cell input-control-panel__cell--high-pass">
-              <VerticalSlider
-                min={FREQ_MIN}
-                max={FREQ_MAX}
-                step={FREQ_STEP}
-                unit=" Hz"
-                value={hpFreq}
-                // disabled={bypassed}
-                onInput={(value) => setLiveHpFreq(value)}
-                onChange={(value) => commitHighPass(value, activeFilterType)}
-                style={{ width: '100%', flex: '1 1 auto' }}
-              />
-              <div className="input-control-panel__cell-label">High Pass</div>
-            </div>
-
-            <div className="input-control-panel__cell input-control-panel__cell--low-pass">
-              <VerticalSlider
-                min={FREQ_MIN}
-                max={FREQ_MAX}
-                step={FREQ_STEP}
-                unit=" Hz"
-                value={lpFreq}
-                // disabled={bypassed}
-                onInput={(value) => setLiveLpFreq(value)}
-                onChange={(value) => commitLowPass(value, activeFilterType)}
-                style={{ width: '100%', flex: '1 1 auto' }}
-              />
-              <div className="input-control-panel__cell-label">Low Pass</div>
-            </div>
-          </div>
-
-          <div className="input-control-panel__side">
-            <label className="input-control-panel__select">
-              <span className="input-control-panel__select-label">Filter Type</span>
-              <select
-                value={activeFilterType}
-                disabled={bypassed}
-                onChange={(e) => handleFilterTypeChange(e.target.value as CrossoverFilter)}
-              >
-                {FILTER_TYPE_OPTIONS.map((opt) => (
-                  <option key={opt.value} value={opt.value}>
-                    {opt.label}
-                  </option>
-                ))}
-              </select>
-            </label>
-
-            <button
-              type="button"
-              className={`input-control-panel__bypass-btn${
-                bypassed ? ' input-control-panel__bypass-btn--active' : ''
-              }`}
-              onClick={handleBypassToggle}
-            >
-              {bypassed ? 'Bypassed' : 'Bypass'}
-            </button>
-          </div> */}
-        </div>
-      </div>
-    </>
-  );
-}
-
-export default InputSection;
@@ -18,18 +18,23 @@
  z-index: 20;

  border-top: var(--border-width) solid var(--border-hairline);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .limiter-panels {
+  display: grid;
+  grid-auto-flow: column;
  height: 100%;
-  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
+  justify-content: center;
 }

 .limiter-panel {
  position: relative;
-  height: 10;
+  height: 100%;

  aspect-ratio: 0.5;
  flex: 0 0 auto;
@@ -116,6 +121,9 @@

  box-sizing: border-box;
  background: var(--bg-panel);
+
+  user-select: none;
+  -webkit-user-select: none;
 }

 .limiter-graph-panel {
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
LucasDLTG	e68e73d3d5	fix: render error on input	2026-09-30 21:14:08 +02:00
Lucas	a5669805c8	fix: make led focus the tab	2026-09-30 16:55:47 +02:00
Lucas	cef7336517	feat: remember panel per dsp	2026-09-30 16:53:44 +02:00
Lucas	50a3c1a1e5	fix: handle abort password	2026-09-30 16:35:15 +02:00
Lucas	684f5ce866	fix: too wide misc panel	2026-09-30 16:08:42 +02:00
Lucas	80da40f678	fix: disconnect button	2026-09-30 12:42:14 +02:00
LucasDLTG	3cca2f41f4	fix: connection led	2026-09-29 20:56:34 +02:00
Lucas	6511d9d007	unstable	2026-09-29 16:59:54 +02:00
Lucas	d5a2afdea5	feat: add locking styles	2026-09-28 16:41:16 +02:00
Lucas	24830172ae	feat: add rename channel	2026-09-25 15:10:19 +02:00
LucasDLTG	fd7dd89f55	feat: match bypass button color	2026-09-24 18:13:57 +02:00
LucasDLTG	dac6c729cd	feat: remove outdated commentaries	2026-09-23 21:44:26 +02:00
LucasDLTG	d48155683b	feat: disable inputs if peq dont use them	2026-09-23 20:03:39 +02:00
LucasDLTG	e1d6398d57	feat: dont draw geq/peq curves if bypass	2026-09-22 21:05:59 +02:00
LucasDLTG	4aae47cd27	merge	2026-09-22 19:12:40 +02:00
LucasDLTG	61f821c3e9	feat: add confirmation windows for reset	2026-09-22 19:09:38 +02:00
Lucas	b74857d7f6	feat: disable click when exiting select list	2026-09-21 15:58:42 +02:00
Lucas	d3a783f77f	feat: custom item list in selector	2026-09-21 15:25:21 +02:00
Lucas	f965779373	feat: add notification for all dsp query	2026-09-21 14:16:04 +02:00
Lucas	b0d4e372cb	feat: update logo + app metadata	2026-09-21 10:57:14 +02:00
LucasDLTG	e893cab082	fix: unused import	2026-09-20 21:41:09 +02:00
LucasDLTG	10b890b5ae	feat: implement copy and link	2026-09-20 21:40:25 +02:00
LucasDLTG	e05d589311	fix: command in lib.rs	2026-09-13 22:39:01 +02:00
LucasDLTG	00b6721c42	feat: add MiscellaneousPanel - need to implement UI	2026-09-13 19:09:47 +02:00
LucasDLTG	4f2bce1f5f	fix: preset renaming	2026-09-13 17:13:03 +02:00
LucasDLTG	8c0b272ab9	refactor: reorder tauri commands and highlight missing	2026-09-13 16:24:08 +02:00
LucasDLTG	772a331f04	fix: hanging notifications	2026-09-13 15:55:11 +02:00
LucasDLTG	1643a887af	feat: add peq output pages	2026-09-13 15:48:26 +02:00
LucasDLTG	8e9a59d026	feat: finalize input section	2026-09-13 14:25:00 +02:00
LucasDLTG	1792910ca1	fix: remove useless vars	2026-09-13 10:51:04 +02:00
LucasDLTG	faa019d52b	fix: matrix choice selector	2026-09-13 10:50:43 +02:00
LucasDLTG	f6bc46dd98	fix; compressoor steppers	2026-09-13 10:06:48 +02:00
LucasDLTG	30e1c0b0a9	feat: wheel behaviour on choiceselect	2026-09-13 09:08:42 +02:00
LucasDLTG	9f2ace9698	feat: use new meter format	2026-09-13 09:04:04 +02:00
LucasDLTG	1e00ca3a7c	feat: remove state and let rust handle	2026-09-12 19:37:59 +02:00
LucasDLTG	2717dfe99a	feat: prevent text selection on dsp sub pages	2026-09-12 15:19:57 +02:00
LucasDLTG	fd545fb2a8	feat: prevent text selection on main pages	2026-09-12 14:14:47 +02:00
LucasDLTG	3793ee9f5b	feat: prevent text selection on add dsp page	2026-09-12 13:35:02 +02:00
LucasDLTG	014ccf5197	fix: style of add page selector	2026-09-12 11:52:36 +02:00
LucasDLTG	0f198692ad	fix: draw over bounds	2026-09-12 11:22:27 +02:00
LucasDLTG	19c3aedf80	fix: panel on all pages	2026-09-12 10:12:17 +02:00
LucasDLTG	9589f6f3f0	fix: gate panels on linux	2026-09-11 20:27:55 +02:00
LucasDLTG	037d17ff3d	feat: graph header on gain panel	2026-09-09 20:56:35 +02:00
LucasDLTG	20182a8e36	fix: font weigth on 'add page'	2026-09-09 17:24:12 +02:00
LucasDLTG	8f5a7c22cc	fix: linux display main page	2026-09-08 21:57:38 +02:00
LucasDLTG	ac23f98fcd	feat: push Topbar	2026-09-06 12:54:45 +02:00
LucasDLTG	81a99b7173	feat: update	2026-09-06 12:45:27 +02:00
LucasDLTG	75ac349790	refactor: graph to use a set of points instead of taking the whole dsp oobject	2026-08-31 20:14:07 +02:00
LucasDLTG	21728b5e6d	fix: eslint errors	2026-08-31 14:12:36 +02:00
LucasDLTG	d6d0215e09	feat: add peq foor input	2026-08-31 14:12:03 +02:00
LucasDLTG	a0c9fbb674	feat: add behaviour to hp/lp filters	2026-08-13 11:32:06 +02:00
LucasDLTG	a28dd890dd	feat: start input section	2026-08-12 22:19:09 +02:00
LucasDLTG	00adc4df53	feat: add matrix section	2026-08-12 18:45:57 +02:00
LucasDLTG	eb751f9404	feat: round max on delay graph	2026-08-12 12:23:08 +02:00
LucasDLTG	5945b48b98	feat: improve compressor graph	2026-08-12 12:19:17 +02:00
LucasDLTG	ab9de39556	fix: error js	2026-08-12 11:57:39 +02:00
LucasDLTG	ddec10ca8f	feat: add geq graph + bypass warning	2026-08-12 11:51:26 +02:00