diff --git a/client/src/config/firmwareFeatures.ts b/client/src/config/firmwareFeatures.ts
index 3e908e5..55874cd 100644
--- a/client/src/config/firmwareFeatures.ts
+++ b/client/src/config/firmwareFeatures.ts
@@ -13,6 +13,8 @@ export const FIRMWARE_FEATURE_MIN_VERSION = {
   peqPresetRenameAndSort: 29,
   /** Hearing compensation section on the Effects page. */
   hearingCompensation: 30,
+  /** Headphone max/startup volume rows on the Audio page (hpMaxVolume/hpStartupVolume). */
+  hpVolumeSettings: 31,
 } as const;
 
 export type FirmwareFeatureKey = keyof typeof FIRMWARE_FEATURE_MIN_VERSION;
@@ -37,3 +39,7 @@ export function supportsPeqPresetRenameAndSort(firmwareVersion: number): boolean
   return isFirmwareFeatureAvailable("peqPresetRenameAndSort", firmwareVersion);
 }
 
+export function supportsHpVolumeSettings(firmwareVersion: number): boolean {
+  return isFirmwareFeatureAvailable("hpVolumeSettings", firmwareVersion);
+}
+
diff --git a/client/src/lib/luxsinApi.ts b/client/src/lib/luxsinApi.ts
index 4508650..63d0b5d 100644
--- a/client/src/lib/luxsinApi.ts
+++ b/client/src/lib/luxsinApi.ts
@@ -98,6 +98,10 @@ export interface DeviceState {
   dacGain: number;
   dacArc: number;
   dacImpedance: number;
+  /** Headphone max volume: 0 = 0dB, 1 = -5dB … 10 = -50dB (5dB steps). */
+  hpMaxVolume: number;
+  /** Headphone startup volume: 0 = default, 1 = -20dB … 7 = -50dB (5dB steps). */
+  hpStartupVolume: number;
   dreMode: number;
   dacVolumeDirect: number;
   analogGain: number;
@@ -559,6 +563,8 @@ export const MOCK_DEVICE_STATE: DeviceState = {
   dacGain: 0,
   dacArc: 0,
   dacImpedance: 0,
+  hpMaxVolume: 0,
+  hpStartupVolume: 0,
   dreMode: 0,
   dacVolumeDirect: 0,
   analogGain: 0,
diff --git a/client/src/locales/data-de.json b/client/src/locales/data-de.json
index 5f3967a..3e59e46 100644
--- a/client/src/locales/data-de.json
+++ b/client/src/locales/data-de.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "Balance & Empfindlichkeit",
     "sectionOutput": "Ausgangsmerkmale",
+    "sectionHpSettings": "Kopfhörer-Einstellungen",
     "sectionIisSettings": "IIS-Einstellungen",
     "sectionSystemInterface": "System & Schnittstelle",
     "balance": "Links-Rechts-Balance",
@@ -537,6 +538,92 @@
       "cancel": "Abbrechen"
     },
     "volumeStep": "Lautstärkestufe",
+    "hpMaxVolume": {
+      "label": "Max. Kopfhörerlautstärke",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "Kopfhörer-Startlautstärke",
+      "options": [
+        {
+          "index": 0,
+          "label": "Standard"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "Startlautstärke",
       "options": [
diff --git a/client/src/locales/data-en.json b/client/src/locales/data-en.json
index 6f14830..cf2affe 100644
--- a/client/src/locales/data-en.json
+++ b/client/src/locales/data-en.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "Balance & sensitivity",
     "sectionOutput": "Output characteristics",
+    "sectionHpSettings": "Headphone settings",
     "sectionIisSettings": "IIS settings",
     "sectionSystemInterface": "System & interface",
     "balance": "Left-right balance",
@@ -537,6 +538,92 @@
       "cancel": "Cancel"
     },
     "volumeStep": "Volume step",
+    "hpMaxVolume": {
+      "label": "Max headphone volume",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "Headphone startup volume",
+      "options": [
+        {
+          "index": 0,
+          "label": "Default"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "Boot volume",
       "options": [
diff --git a/client/src/locales/data-es.json b/client/src/locales/data-es.json
index 387fb52..7cfbac0 100644
--- a/client/src/locales/data-es.json
+++ b/client/src/locales/data-es.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "Balance y sensibilidad",
     "sectionOutput": "Características de salida",
+    "sectionHpSettings": "Ajustes de auriculares",
     "sectionIisSettings": "Ajustes IIS",
     "sectionSystemInterface": "Sistema e interfaz",
     "balance": "Balance izquierda-derecha",
@@ -537,6 +538,92 @@
       "cancel": "Cancelar"
     },
     "volumeStep": "Paso de volumen",
+    "hpMaxVolume": {
+      "label": "Volumen máx. de auriculares",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "Volumen de inicio de auriculares",
+      "options": [
+        {
+          "index": 0,
+          "label": "Predeterminado"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "Volumen de arranque",
       "options": [
diff --git a/client/src/locales/data-fr.json b/client/src/locales/data-fr.json
index 2d2d3b1..66c566e 100644
--- a/client/src/locales/data-fr.json
+++ b/client/src/locales/data-fr.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "Balance et sensibilité",
     "sectionOutput": "Caractéristiques de sortie",
+    "sectionHpSettings": "Réglages du casque",
     "sectionIisSettings": "Paramètres IIS",
     "sectionSystemInterface": "Système et interface",
     "balance": "Balance gauche-droite",
@@ -537,6 +538,92 @@
       "cancel": "Annuler"
     },
     "volumeStep": "Pas de volume",
+    "hpMaxVolume": {
+      "label": "Volume max. du casque",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "Volume de démarrage du casque",
+      "options": [
+        {
+          "index": 0,
+          "label": "Par défaut"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "Volume de démarrage",
       "options": [
diff --git a/client/src/locales/data-zh-HK.json b/client/src/locales/data-zh-HK.json
index 7a8222b..be47a5a 100644
--- a/client/src/locales/data-zh-HK.json
+++ b/client/src/locales/data-zh-HK.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "平衡與靈敏度",
     "sectionOutput": "輸出特性",
+    "sectionHpSettings": "耳機設定",
     "sectionIisSettings": "IIS設定",
     "sectionSystemInterface": "系統與介面",
     "balance": "左右平衡",
@@ -537,6 +538,92 @@
       "cancel": "取消"
     },
     "volumeStep": "音量級距",
+    "hpMaxVolume": {
+      "label": "耳機最大音量",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "耳機啟動音量",
+      "options": [
+        {
+          "index": 0,
+          "label": "預設"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "開機音量",
       "options": [
diff --git a/client/src/locales/data-zh.json b/client/src/locales/data-zh.json
index 4252614..6f6f591 100644
--- a/client/src/locales/data-zh.json
+++ b/client/src/locales/data-zh.json
@@ -435,6 +435,7 @@
   "dac": {
     "sectionBalanceSensitivity": "平衡与灵敏度",
     "sectionOutput": "输出特性",
+    "sectionHpSettings": "耳机设定",
     "sectionIisSettings": "IIS设置",
     "sectionSystemInterface": "系统与接口",
     "balance": "左右平衡",
@@ -537,6 +538,92 @@
       "cancel": "取消"
     },
     "volumeStep": "音量幅度",
+    "hpMaxVolume": {
+      "label": "耳机最大音量",
+      "options": [
+        {
+          "index": 0,
+          "label": "0dB"
+        },
+        {
+          "index": 1,
+          "label": "-5dB"
+        },
+        {
+          "index": 2,
+          "label": "-10dB"
+        },
+        {
+          "index": 3,
+          "label": "-15dB"
+        },
+        {
+          "index": 4,
+          "label": "-20dB"
+        },
+        {
+          "index": 5,
+          "label": "-25dB"
+        },
+        {
+          "index": 6,
+          "label": "-30dB"
+        },
+        {
+          "index": 7,
+          "label": "-35dB"
+        },
+        {
+          "index": 8,
+          "label": "-40dB"
+        },
+        {
+          "index": 9,
+          "label": "-45dB"
+        },
+        {
+          "index": 10,
+          "label": "-50dB"
+        }
+      ]
+    },
+    "hpStartupVolume": {
+      "label": "耳机启动音量",
+      "options": [
+        {
+          "index": 0,
+          "label": "默认"
+        },
+        {
+          "index": 1,
+          "label": "-20dB"
+        },
+        {
+          "index": 2,
+          "label": "-25dB"
+        },
+        {
+          "index": 3,
+          "label": "-30dB"
+        },
+        {
+          "index": 4,
+          "label": "-35dB"
+        },
+        {
+          "index": 5,
+          "label": "-40dB"
+        },
+        {
+          "index": 6,
+          "label": "-45dB"
+        },
+        {
+          "index": 7,
+          "label": "-50dB"
+        }
+      ]
+    },
     "bootVolume": {
       "label": "开机音量",
       "options": [
diff --git a/client/src/pages/AudioPage.tsx b/client/src/pages/AudioPage.tsx
index 774eae2..fbdbbf1 100644
--- a/client/src/pages/AudioPage.tsx
+++ b/client/src/pages/AudioPage.tsx
@@ -3,7 +3,8 @@
    Design: Reference luxsin_x8_音频设置.png
    Sections:
      - 平衡与灵敏度: 左右平衡 slider, VU灵敏度 slider
-     - 输出特性: 滤波特性, 耳机增益, 音量幅度
+     - 输出特性: 滤波特性, 动态范围增强, 音量幅度
+     - 耳机设定: 耳机增益, 自动检测耳机阻抗, 耳机最大音量, 耳机启动音量(后两项 version >= 31 才显示)
      - IIS设置: IIS静音电平, IIS模式
      - 系统与接口: 开机音量, XLR极性
    All list rows → navigate to /select page
@@ -14,7 +15,7 @@ import { useLocation } from "wouter";
 import { useState, useEffect, useRef } from "react";
 import BottomNav from "@/components/BottomNav";
 import { navigateToSelect } from "./SelectPage";
-import { getBootSoundMaxIndex } from "@/config/firmwareFeatures";
+import { getBootSoundMaxIndex, supportsHpVolumeSettings } from "@/config/firmwareFeatures";
 import {
   normalizeBootSound,
   parseFirmwareVersion,
@@ -110,6 +111,7 @@ type LocaleDac = {
   dac?: {
     sectionBalanceSensitivity?: string;
     sectionOutput?: string;
+    sectionHpSettings?: string;
     sectionIisSettings?: string;
     sectionSystemInterface?: string;
     balance?: string;
@@ -117,6 +119,8 @@ type LocaleDac = {
     filters?: { label?: string; options?: Array<{ index: number; label: string }> };
     dacGain?: { label?: string; options?: Array<{ index: number; label: string }> };
     autoImpedance?: { label?: string; options?: Array<{ index: number; label: string }> };
+    hpMaxVolume?: { label?: string; options?: Array<{ index: number; label: string }> };
+    hpStartupVolume?: { label?: string; options?: Array<{ index: number; label: string }> };
     dreMode?: { label?: string; options?: Array<{ index: number; label: string }> };
     dacVolumeDirect?: { label?: string; options?: Array<{ index: number; label: string }> };
     uacVer?: { label?: string; options?: Array<{ index: number; label: string }> };
@@ -216,6 +220,8 @@ export default function AudioPage() {
 
   const gainIdx = ds?.dacGain ?? 0;
   const autoImpedanceOn = (ds?.dacImpedance ?? 0) === 1;
+  const hpMaxVolumeIdx = Math.min(Math.max(ds?.hpMaxVolume ?? 0, 0), 10);
+  const hpStartupVolumeIdx = Math.min(Math.max(ds?.hpStartupVolume ?? 0, 0), 7);
   const dreModeOn = (ds?.dreMode ?? 0) === 1;
   const dacVolumeDirectIdx = Math.min(Math.max(ds?.dacVolumeDirect ?? 0, 0), 2);
   const stepIdx = ds?.soundStep ?? 1;
@@ -226,6 +232,7 @@ export default function AudioPage() {
   const uacVerIdx = Math.min(Math.max(ds?.uac_ver ?? 0, 0), 1);
   const bootSoundVal = normalizeBootSound(localBootSound);
   const firmwareVersion = parseFirmwareVersion(ds?.version);
+  const showHpVolumeSettings = supportsHpVolumeSettings(firmwareVersion);
   const bootSoundMaxIdx = getBootSoundMaxIndex(firmwareVersion);
   const bootSoundSelectIdx = Math.min(bootSoundVal, bootSoundMaxIdx);
   const BOOT_VOLUME_OPTIONS = bootVolumeOptions(dacText, bootSoundMaxIdx);
@@ -241,6 +248,12 @@ export default function AudioPage() {
     "-12dB",
   ]);
   const UAC_VER_OPTIONS = optionLabels(dacText.uacVer?.options, ["UAC 2.0", "UAC 1.0"]);
+  const HP_MAX_VOLUME_OPTIONS = optionLabels(dacText.hpMaxVolume?.options, [
+    "0dB", "-5dB", "-10dB", "-15dB", "-20dB", "-25dB", "-30dB", "-35dB", "-40dB", "-45dB", "-50dB",
+  ]);
+  const HP_STARTUP_VOLUME_OPTIONS = optionLabels(dacText.hpStartupVolume?.options, [
+    "默认", "-20dB", "-25dB", "-30dB", "-35dB", "-40dB", "-45dB", "-50dB",
+  ]);
 
   const pageTitle = usePageTitleWithConnection(localeData.home?.audioSet ?? "Audio");
 
@@ -322,16 +335,6 @@ export default function AudioPage() {
             value={FILTER_OPTIONS[filterIdx] ?? FILTER_OPTIONS[0] ?? "—"}
             onClick={() => goSelect(dacText.filters?.label ?? "选择滤波特性", FILTER_OPTIONS, filterIdx, "filterCharacteristic")}
           />
-          <ListRow
-            label={dacText.dacGain?.label ?? "耳机增益"}
-            value={GAIN_OPTIONS[gainIdx] ?? GAIN_OPTIONS[0] ?? "—"}
-            onClick={() => goSelect(dacText.dacGain?.label ?? "选择耳机增益", GAIN_OPTIONS, gainIdx, "dacGain")}
-          />
-          <ToggleRow
-            label={dacText.autoImpedance?.label ?? "自动检测耳机阻抗"}
-            checked={autoImpedanceOn}
-            onChange={(v) => updateSetting({ dacImpedance: v ? 1 : 0 })}
-          />
           <ToggleRow
             label={dacText.dreMode?.label ?? "动态范围增强"}
             checked={dreModeOn}
@@ -356,6 +359,39 @@ export default function AudioPage() {
           />
         </div>
 
+        {/* ── 耳机设定 ── */}
+        <SectionHeader title={dacText.sectionHpSettings ?? "耳机设定"} />
+        <div className="ios-list-group">
+          <ListRow
+            label={dacText.dacGain?.label ?? "耳机增益"}
+            value={GAIN_OPTIONS[gainIdx] ?? GAIN_OPTIONS[0] ?? "—"}
+            onClick={() => goSelect(dacText.dacGain?.label ?? "选择耳机增益", GAIN_OPTIONS, gainIdx, "dacGain")}
+          />
+          <ToggleRow
+            label={dacText.autoImpedance?.label ?? "自动检测耳机阻抗"}
+            checked={autoImpedanceOn}
+            onChange={(v) => updateSetting({ dacImpedance: v ? 1 : 0 })}
+          />
+          {showHpVolumeSettings && (
+            <>
+              <ListRow
+                label={dacText.hpMaxVolume?.label ?? "耳机最大音量"}
+                value={HP_MAX_VOLUME_OPTIONS[hpMaxVolumeIdx] ?? HP_MAX_VOLUME_OPTIONS[0] ?? "—"}
+                onClick={() =>
+                  goSelect(dacText.hpMaxVolume?.label ?? "耳机最大音量", HP_MAX_VOLUME_OPTIONS, hpMaxVolumeIdx, "hpMaxVolume")
+                }
+              />
+              <ListRow
+                label={dacText.hpStartupVolume?.label ?? "耳机启动音量"}
+                value={HP_STARTUP_VOLUME_OPTIONS[hpStartupVolumeIdx] ?? HP_STARTUP_VOLUME_OPTIONS[0] ?? "—"}
+                onClick={() =>
+                  goSelect(dacText.hpStartupVolume?.label ?? "耳机启动音量", HP_STARTUP_VOLUME_OPTIONS, hpStartupVolumeIdx, "hpStartupVolume")
+                }
+              />
+            </>
+          )}
+        </div>
+
         {/* ── IIS 设置 ── */}
         <SectionHeader title={dacText.sectionIisSettings ?? "IIS设置"} />
         <div className="ios-list-group">
diff --git a/client/src/pages/SelectPage.tsx b/client/src/pages/SelectPage.tsx
index ea70c37..894079e 100644
--- a/client/src/pages/SelectPage.tsx
+++ b/client/src/pages/SelectPage.tsx
@@ -52,6 +52,8 @@ const KEY_TO_SETTING: Record<string, string> = {
   xlr: "xlr",
   dacGain: "dacGain",
   dacImpedance: "dacImpedance",
+  hpMaxVolume: "hpMaxVolume",
+  hpStartupVolume: "hpStartupVolume",
   dacVolumeDirect: "dacVolumeDirect",
   uacVer: "uac_ver",
   vu: "vu",