diff --git a/client/src/lib/luxsinApi.ts b/client/src/lib/luxsinApi.ts
index 7c466ae..c3e14d8 100644
--- a/client/src/lib/luxsinApi.ts
+++ b/client/src/lib/luxsinApi.ts
@@ -62,6 +62,7 @@ export interface DeviceState {
   audioFormat: string;
   pcm: number;
   vu: number;
+  vuSensor: number;
   vu_count: number;
   screenLight: number;
   knob_breathlight: number;
@@ -227,6 +228,7 @@ export const MOCK_DEVICE_STATE: DeviceState = {
   audioFormat: "PCM 44.1 KHz",
   pcm: 1,
   vu: 0,
+  vuSensor: 0,
   vu_count: 5,
   screenLight: 0,
   knob_breathlight: 1,
diff --git a/client/src/pages/AudioPage.tsx b/client/src/pages/AudioPage.tsx
index eb7fb5d..99686bd 100644
--- a/client/src/pages/AudioPage.tsx
+++ b/client/src/pages/AudioPage.tsx
@@ -58,14 +58,20 @@ export default function AudioPage() {
   const [, setLocation] = useLocation();
   const { deviceState, updateSetting } = useDevice();
   const ds = deviceState;
+  const vuSensor = (ds as ({ vuSensor?: number } | null))?.vuSensor;
 
-  const balanceVal = ds?.balance ?? 0;
+  // balance 从接口获取的是乘以 10 后的值，需要除以 10 显示（例如：-130 → -13.0）
+  const balanceVal = ds?.balance !== undefined ? ds.balance / 10 : 0;
+  // vuSensor 从接口获取的是放大 2 倍的值，需要除以 2 显示（例如：20 → +10dB）
+  const vuSensVal = vuSensor !== undefined ? vuSensor / 2 : 0;
   const [localBalance, setLocalBalance] = useState(balanceVal);
-  const [localVuSens, setLocalVuSens] = useState(12);
+  const [localVuSens, setLocalVuSens] = useState(0);
   const [filterIdx] = useState(0);
-  const isDragging = useRef(false);
+  const isBalanceDragging = useRef(false);
+  const isVuDragging = useRef(false);
 
-  useEffect(() => { if (!isDragging.current) setLocalBalance(balanceVal); }, [balanceVal]);
+  useEffect(() => { if (!isBalanceDragging.current) setLocalBalance(balanceVal); }, [balanceVal]);
+  useEffect(() => { if (!isVuDragging.current) setLocalVuSens(vuSensVal); }, [vuSensVal]);
 
   const gainIdx = ds?.analogGain ?? 0;
   const stepIdx = ds?.soundStep ?? 1;
@@ -99,12 +105,13 @@ export default function AudioPage() {
                 {localBalance >= 0 ? `+${localBalance.toFixed(1)}` : localBalance.toFixed(1)} dB
               </span>
             </div>
-            <CyanSlider value={localBalance} min={-10} max={10} step={0.1}
+            <CyanSlider value={localBalance} min={-15} max={15} step={0.1}
               onChange={(v) => {
-                isDragging.current = true;
+                isBalanceDragging.current = true;
                 setLocalBalance(v);
-                updateSetting({ balance: v });
-                setTimeout(() => { isDragging.current = false; }, 500);
+                // 实时调用接口（例如：-13.0 → -130）
+                updateSetting({ balance: Math.round(v * 10) });
+                setTimeout(() => { isBalanceDragging.current = false; }, 500);
               }} />
           </div>
           <div className="border-t border-white/[0.06]" />
@@ -112,14 +119,16 @@ export default function AudioPage() {
             <div className="flex items-center justify-between">
               <span className="text-[16px] text-white">VU 表灵敏度</span>
               <span className="text-[16px] font-semibold" style={{ color: "#00FFF6" }}>
-                {localVuSens} dB
+                {localVuSens >= 0 ? `+${localVuSens}` : localVuSens} dB
               </span>
             </div>
-            <CyanSlider value={localVuSens} min={0} max={24}
+            <CyanSlider value={localVuSens} min={-20} max={20}
               onChange={(v) => {
-                isDragging.current = true;
+                isVuDragging.current = true;
                 setLocalVuSens(v);
-                setTimeout(() => { isDragging.current = false; }, 500);
+                // 接口参数需要将显示值乘以 2（例如：10dB -> vuSensor=20）
+                updateSetting({ vuSensor: Math.round(v * 2) });
+                setTimeout(() => { isVuDragging.current = false; }, 500);
               }} />
           </div>
         </div>
diff --git a/client/src/pages/Home.tsx b/client/src/pages/Home.tsx
index 6515ae6..b61d1ec 100644
--- a/client/src/pages/Home.tsx
+++ b/client/src/pages/Home.tsx
@@ -341,9 +341,7 @@ export default function Home() {
           <ListRow
             icon={<Settings size={16} />}
             label="音频设置"
-            toggle
-            checked={audioOn}
-            onToggle={(v) => updateSetting({ audio_enable: v ? 1 : 0 })}
+            onClick={() => setLocation("/audio")}
           />
           <ListRow
             icon={<Gauge size={16} />}
diff --git a/client/src/pages/SystemPage.tsx b/client/src/pages/SystemPage.tsx
index 6df8c8b..29032c7 100644
--- a/client/src/pages/SystemPage.tsx
+++ b/client/src/pages/SystemPage.tsx
@@ -14,6 +14,9 @@ import { useLocation } from "wouter";
 import { useEffect } from "react";
 import BottomNav from "@/components/BottomNav";
 import { navigateToSelect } from "./SelectPage";
+import localeZh from "@/locales/data-zh.json";
+import localeZhHK from "@/locales/data-zh-HK.json";
+import localeEn from "@/locales/data-en.json";
 
 function IOSToggle({ checked, onChange }: { checked: boolean; onChange: (v: boolean) => void }) {
   return (
@@ -61,12 +64,31 @@ function ListRow({ label, description, value, onClick, toggle, checked, onToggle
   );
 }
 
-const SCREEN_LIGHT_OPTIONS = ["亮", "中等", "暗"];
-const KNOB_LIGHT_OPTIONS = ["关闭", "亮", "中等", "暗"];
-const SCREEN_OFF_OPTIONS = ["常亮", "30秒", "1分钟", "3分钟", "5分钟"];
-const SLEEP_OPTIONS = ["关闭", "1分钟", "5分钟", "10分钟"];
-const AUTO_HOME_OPTIONS = ["关闭", "20秒", "40秒", "60秒"];
-const LANG_OPTIONS = ["English", "繁體中文", "简体中文"];
+type LocaleSettings = {
+  settings: {
+    vu: string;
+    screenBrightness: { label: string; options: Array<{ index: number; label: string }> };
+    turnOffScreen: { label: string; options: Array<{ index: number; label: string }> };
+    knobBrightness: { label: string; options: Array<{ index: number; label: string }> };
+    buttonLight: { label: string; options: Array<{ index: number; label: string }> };
+    language: { label: string; options: Array<{ index: number; label: string }> };
+    Automatic: { label: string; options: Array<{ index: number; label: string }> };
+    sleepTime?: { label: string; options: Array<{ index: number; label: string }> };
+    sleep?: { label: string; options: Array<{ index: number; label: string }> };
+  };
+};
+
+const LOCALE_BY_LANG: Record<number, LocaleSettings> = {
+  0: localeEn as LocaleSettings,
+  1: localeZhHK as LocaleSettings,
+  2: localeZh as LocaleSettings,
+};
+
+function optionLabels(items: Array<{ index: number; label: string }> | undefined, fallback: string[]) {
+  if (!items || items.length === 0) return fallback;
+  const sorted = [...items].sort((a, b) => a.index - b.index);
+  return sorted.map((item) => item.label);
+}
 
 export default function SystemPage() {
   const [, setLocation] = useLocation();
@@ -87,6 +109,14 @@ export default function SystemPage() {
   const autoHomeIdx = ds?.autoHome ?? 1;
   const langIdx = ds?.language ?? 2;
   const knobBreathLightOn = (ds?.knob_breathlight ?? 1) === 0;
+  const localeData = LOCALE_BY_LANG[langIdx] ?? localeZh;
+  const settingsText = localeData.settings;
+  const SCREEN_LIGHT_OPTIONS = optionLabels(settingsText.screenBrightness?.options, ["亮", "中等", "暗"]);
+  const KNOB_LIGHT_OPTIONS = optionLabels(settingsText.knobBrightness?.options, ["关闭", "亮", "中等", "暗"]);
+  const SCREEN_OFF_OPTIONS = optionLabels(settingsText.turnOffScreen?.options, ["常亮", "30秒", "1分钟", "3分钟", "5分钟"]);
+  const SLEEP_OPTIONS = optionLabels(settingsText.sleepTime?.options ?? settingsText.sleep?.options, ["关闭", "1分钟", "5分钟", "10分钟"]);
+  const AUTO_HOME_OPTIONS = optionLabels(settingsText.Automatic?.options, ["关闭", "20秒", "40秒", "60秒"]);
+  const LANG_OPTIONS = optionLabels(settingsText.language?.options, ["English", "繁體中文", "简体中文"]);
 
   const goSelect = (title: string, options: string[], selected: number, key: string) => {
     navigateToSelect(title, options, selected, "/system", key);
@@ -99,7 +129,7 @@ export default function SystemPage() {
         <button onClick={() => setLocation("/")} className="mr-4 text-white/60 active:text-white transition-colors">
           <ChevronLeft size={24} />
         </button>
-        <h1 className="flex-1 text-center text-[17px] font-semibold text-white">设置</h1>
+        <h1 className="flex-1 text-center text-[17px] font-semibold text-white">{settingsText.vu}</h1>
         <div className="w-8" />
       </div>
 
@@ -107,16 +137,16 @@ export default function SystemPage() {
         {/* ── 显示 ── */}
         <SectionHeader title="显示" />
         <div className="ios-list-group">
-          <ListRow label="屏幕亮度" description="调节屏幕的整体亮度"
+          <ListRow label={settingsText.screenBrightness.label} description="调节屏幕的整体亮度"
             value={SCREEN_LIGHT_OPTIONS[screenLightIdx]}
-            onClick={() => goSelect("屏幕亮度", SCREEN_LIGHT_OPTIONS, screenLightIdx, "screenLight")} />
-          <ListRow label="自动锁屏" description="设备无操作后自动关闭屏幕的时间"
+            onClick={() => goSelect(settingsText.screenBrightness.label, SCREEN_LIGHT_OPTIONS, screenLightIdx, "screenLight")} />
+          <ListRow label={settingsText.turnOffScreen.label} description="设备无操作后自动关闭屏幕的时间"
             value={SCREEN_OFF_OPTIONS[screenOffIdx]}
-            onClick={() => goSelect("自动锁屏", SCREEN_OFF_OPTIONS, screenOffIdx, "screenOff")} />
-          <ListRow label="旋钮亮度" description="调节旋钮指示灯的亮度"
+            onClick={() => goSelect(settingsText.turnOffScreen.label, SCREEN_OFF_OPTIONS, screenOffIdx, "screenOff")} />
+          <ListRow label={settingsText.knobBrightness.label} description="调节旋钮指示灯的亮度"
             value={KNOB_LIGHT_OPTIONS[buttonLightIdx]}
-            onClick={() => goSelect("旋钮亮度", KNOB_LIGHT_OPTIONS, buttonLightIdx, "buttonLight")} />
-          <ListRow label="旋钮熄屏呼吸灯" description="锁屏后旋钮是否显示呼吸灯效果"
+            onClick={() => goSelect(settingsText.knobBrightness.label, KNOB_LIGHT_OPTIONS, buttonLightIdx, "buttonLight")} />
+          <ListRow label={settingsText.buttonLight.label} description="锁屏后旋钮是否显示呼吸灯效果"
             toggle checked={knobBreathLightOn}
             onToggle={(v) => updateSetting({ knob_breathlight: v ? 0 : 1 })} />
         </div>
@@ -124,15 +154,15 @@ export default function SystemPage() {
         {/* ── 通用 ── */}
         <SectionHeader title="通用" />
         <div className="ios-list-group">
-          <ListRow label="语言" description="设置系统显示语言"
+          <ListRow label={settingsText.language.label} description="设置系统显示语言"
             value={LANG_OPTIONS[langIdx]}
-            onClick={() => goSelect("选择语言", LANG_OPTIONS, langIdx, "language")} />
-          <ListRow label="自动返回首页" description="闲置一段时间后自动回到主界面"
+            onClick={() => goSelect(settingsText.language.label, LANG_OPTIONS, langIdx, "language")} />
+          <ListRow label={settingsText.Automatic.label} description="闲置一段时间后自动回到主界面"
             value={AUTO_HOME_OPTIONS[autoHomeIdx]}
-            onClick={() => goSelect("自动返回首页", AUTO_HOME_OPTIONS, autoHomeIdx, "autoHome")} />
-          <ListRow label="休眠" description="设置设备进入低功耗模式的时间"
+            onClick={() => goSelect(settingsText.Automatic.label, AUTO_HOME_OPTIONS, autoHomeIdx, "autoHome")} />
+          <ListRow label={settingsText.sleepTime?.label ?? settingsText.sleep?.label ?? "休眠"} description="设置设备进入低功耗模式的时间"
             value={SLEEP_OPTIONS[sleepIdx]}
-            onClick={() => goSelect("休眠时间", SLEEP_OPTIONS, sleepIdx, "sleep")} />
+            onClick={() => goSelect(settingsText.sleepTime?.label ?? settingsText.sleep?.label ?? "休眠", SLEEP_OPTIONS, sleepIdx, "sleep")} />
         </div>
 
         {/* ── 关于 ── */}