diff --git a/src/components/LinearGraph/LinearGraph.tsx b/src/components/LinearGraph/LinearGraph.tsx
index 9c877b7..509c94b 100644
--- a/src/components/LinearGraph/LinearGraph.tsx
+++ b/src/components/LinearGraph/LinearGraph.tsx
@@ -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;
@@ -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();
 
diff --git a/src/features/dsp408/components/GainSection/GainSection.tsx b/src/features/dsp408/components/GainSection/GainSection.tsx
index 1181a9a..1e083d2 100644
--- a/src/features/dsp408/components/GainSection/GainSection.tsx
+++ b/src/features/dsp408/components/GainSection/GainSection.tsx
@@ -413,7 +413,7 @@ function GainSection({
   const { yMin: inputYMin, yMax: inputYMax } = computeYAxisBounds(
     inputCurves,
     GRAPH_Y_MIN,
-    GRAPH_Y_MAX,
+    12,
     Y_AXIS_STEP
   );
   const { yMin: outputYMin, yMax: outputYMax } = computeYAxisBounds(
@@ -457,7 +457,18 @@ function GainSection({
             yLabel="dB"
             showGrid={true}
             formatX={(v) => Math.round(v).toString()}
-            formatY={(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 }) => {
               drawCurves({
                 ctx,
diff --git a/src/features/dsp408/constants.ts b/src/features/dsp408/constants.ts
index 13b0c97..2af5fe1 100644
--- a/src/features/dsp408/constants.ts
+++ b/src/features/dsp408/constants.ts
@@ -179,8 +179,16 @@ export const DELAY_RANGES: Record<DelayUnit, [number, number]> = {
 };
 
 // ------ Graph constants ------
-export const GRAPH_X_MIN = 14;
-export const GRAPH_X_MAX = 27000;
+const REAL_X_MIN = 20;
+const REAL_X_MAX = 20000;
+const X_LOG_PADDING = 0.05;
+
+const logMin = Math.log10(REAL_X_MIN);
+const logMax = Math.log10(REAL_X_MAX);
+const logRange = logMax - logMin;
+
+export const GRAPH_X_MIN = Math.floor(Math.pow(10, logMin - logRange * X_LOG_PADDING));
+export const GRAPH_X_MAX = Math.ceil(Math.pow(10, logMax + logRange * X_LOG_PADDING));
 export const GRAPH_Y_MIN = -21;
 export const GRAPH_Y_MAX = 21;