diff --git a/electron/audio-output.test.ts b/electron/audio-output.test.ts
new file mode 100644
index 0000000..5398a9d
--- /dev/null
+++ b/electron/audio-output.test.ts
@@ -0,0 +1,79 @@
+import assert from 'node:assert/strict'
+import { test } from 'node:test'
+import { AudioOutput } from './audio-output.js'
+import { parseWindowPreferences } from './window-settings.js'
+
+const devices = [{ id: 'hdmi', label: 'HDMI' }, { id: 'usb', label: 'USB' }]
+test('выбор сохраняется, применяется до запуска проигрывания и проверяет устройство', async () => {
+  const applied: string[] = []
+  const saved: string[] = []
+  const output = new AudioOutput('', async () => devices, async (id) => { applied.push(id) }, (id) => { saved.push(id) })
+  await output.refresh()
+  await output.select('hdmi')
+  await output.prepare(async (id) => { applied.push(`prepare:${id}`) })
+  assert.deepEqual(applied, ['hdmi', 'prepare:hdmi'])
+  assert.deepEqual(saved, ['hdmi'])
+  assert.equal(output.selected, 'hdmi')
+  await assert.rejects(output.select('missing'), /недоступно/)
+  await assert.rejects(output.select({ id: 'usb' }), /недоступно/)
+  assert.equal(output.selected, 'hdmi')
+})
+
+test('ошибка переключения или сохранения возвращает прежний выход', async () => {
+  for (const failure of ['apply', 'save']) {
+    const applied: string[] = []
+    const output = new AudioOutput('hdmi', async () => devices, async (id) => {
+      applied.push(id)
+      if (id === 'usb' && failure === 'apply') throw new Error('switch failed')
+    }, () => { if (failure === 'save') throw new Error('save failed') })
+    await output.refresh()
+    await assert.rejects(output.select('usb'), /failed/)
+    assert.equal(output.selected, 'hdmi')
+    assert.deepEqual(applied, ['usb', 'hdmi'])
+  }
+})
+
+test('отключение устройства сбрасывает выбор, повторное подключение не меняет его', async () => {
+  let available = devices
+  const saved: string[] = []
+  const output = new AudioOutput('hdmi', async () => available, async () => {}, (id) => { saved.push(id) })
+  await output.refresh()
+  assert.equal(output.selected, 'hdmi')
+  available = []
+  await output.refresh()
+  assert.equal(output.selected, '')
+  assert.match(output.notice, /отключено/)
+  assert.deepEqual(saved, [''])
+  available = devices
+  await output.refresh()
+  assert.equal(output.selected, '')
+  await output.select('usb')
+  assert.equal(output.notice, '')
+})
+
+test('быстрые переключения и подготовка нового окна выполняются по порядку', async () => {
+  const calls: string[] = []
+  let release: () => void = () => {}
+  const held = new Promise<void>((resolve) => { release = resolve })
+  const output = new AudioOutput('', async () => devices, async (id) => {
+    calls.push(id)
+    if (id === 'hdmi') await held
+  }, () => {})
+  await output.refresh()
+  const first = output.select('hdmi')
+  const second = output.select('usb')
+  const prepare = output.prepare(async (id) => { calls.push(`prepare:${id}`) })
+  await Promise.resolve()
+  assert.deepEqual(calls, ['hdmi'])
+  release()
+  await Promise.all([first, second, prepare])
+  assert.deepEqual(calls, ['hdmi', 'usb', 'prepare:usb'])
+})
+
+test('старые настройки совместимы, выбранный аудиовыход читается и валидируется', () => {
+  const old = { version: 1, control: null, display: null }
+  assert.equal(parseWindowPreferences(old).audioOutput, undefined)
+  assert.equal(parseWindowPreferences({ ...old, audioOutput: 'hdmi' }).audioOutput, 'hdmi')
+  assert.throws(() => parseWindowPreferences({ ...old, audioOutput: 123 }))
+  assert.throws(() => parseWindowPreferences({ ...old, audioOutput: 'a'.repeat(1025) }))
+})
diff --git a/electron/audio-output.ts b/electron/audio-output.ts
new file mode 100644
index 0000000..63bed1c
--- /dev/null
+++ b/electron/audio-output.ts
@@ -0,0 +1,52 @@
+import type { AudioOutputInfo } from '../src/types/screen.js'
+
+export class AudioOutput {
+  devices: AudioOutputInfo[] = []
+  notice = ''
+  private pending: Promise<unknown> = Promise.resolve()
+  constructor(
+    public selected: string,
+    private enumerate: () => Promise<AudioOutputInfo[]>,
+    private apply: (id: string) => Promise<void>,
+    private save: (id: string) => void,
+  ) {}
+  private enqueue<T>(operation: () => Promise<T>): Promise<T> {
+    const result = this.pending.then(operation)
+    this.pending = result.catch(() => {})
+    return result
+  }
+  refresh() {
+    return this.enqueue(async () => {
+      this.devices = await this.enumerate()
+      if (this.selected && !this.devices.some((device) => device.id === this.selected)) {
+        await this.apply('')
+        this.selected = ''
+        this.notice = 'Устройство звука отключено. Используется устройство по умолчанию в системе.'
+        this.save('')
+      }
+    })
+  }
+  select(id: unknown) {
+    return this.enqueue(async () => {
+      if (typeof id !== 'string' || (id !== '' && !this.devices.some((d) => d.id === id)))
+        throw new Error('Устройство вывода звука недоступно')
+      const previous = this.selected
+      try {
+        await this.apply(id)
+        this.save(id)
+      } catch (error) {
+        try {
+          await this.apply(previous)
+        } catch {
+          this.notice = 'Не удалось восстановить устройство звука. Выберите устройство заново.'
+        }
+        throw error
+      }
+      this.selected = id
+      this.notice = ''
+    })
+  }
+  prepare(apply: (id: string) => Promise<void>) {
+    return this.enqueue(() => apply(this.selected))
+  }
+}
diff --git a/electron/main.ts b/electron/main.ts
index d94abcd..1212ad2 100644
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -19,6 +19,7 @@ import { Readable } from 'node:stream'
 import { DiagnosticLog } from './diagnostics.js'
 import { Controller, parseCommand } from './controller.js'
 import { WindowSettings, fitControlBounds, preferredDisplayId } from './window-settings.js'
+import { AudioOutput } from './audio-output.js'
 import { parseRange } from './range.js'
 import { Online } from './online.js'
 import type { OnlineState } from '../src/types/online.js'
@@ -40,6 +41,8 @@ protocol.registerSchemesAsPrivileged([
 ])
 let control: BrowserWindow | null = null
 let output: BrowserWindow | null = null
+let audioDevicesWindow: BrowserWindow | null = null
+let audioOutput: AudioOutput
 let closingWindow: BrowserWindow | null = null
 let openingOutput = false
 let outputEpoch = 0
@@ -70,6 +73,9 @@ const rendererRoot = () => join(app.getAppPath(), 'dist')
 function host(): HostInfo {
   const primary = screen.getPrimaryDisplay().id
   return {
+    audioOutputs: audioOutput?.devices ?? [],
+    audioOutputId: audioOutput?.selected ?? '',
+    audioOutputNotice: audioOutput?.notice ?? '',
     notice: hostNotice,
     sleepBlocked: sleepBlocker !== null && powerSaveBlocker.isStarted(sleepBlocker),
     preferredDisplayId: preferredDisplayId(
@@ -90,7 +96,7 @@ function windowOptions(isOutput = false) {
   return {
     backgroundColor: '#111111',
     webPreferences: {
-      ...(isOutput ? { partition: 'screen-output' } : {}),
+      ...(isOutput ? { partition: 'persist:screen-output' } : {}),
       preload: join(__dirname, 'preload.js'),
       nodeIntegration: false,
       contextIsolation: true,
@@ -98,6 +104,15 @@ function windowOptions(isOutput = false) {
     },
   }
 }
+async function setAudioSink(window: BrowserWindow, id: string) {
+  await window.webContents.executeJavaScript(`(async () => {
+    const results = await Promise.allSettled(
+      Array.from(document.querySelectorAll('audio,video')).map(media => media.setSinkId(${JSON.stringify(id)}))
+    );
+    const failed = results.find(result => result.status === 'rejected');
+    if (failed) throw failed.reason;
+  })()`)
+}
 function secure(window: BrowserWindow) {
   window.webContents.setWindowOpenHandler(() => ({ action: 'deny' }))
   window.webContents.on('will-navigate', (event) => event.preventDefault())
@@ -462,12 +477,60 @@ app
         return new Response(null, { status: 404 })
       }
     }
-    // Разные сессии изолируют renderer показа от пульта, протокол и запреты одинаковы.
-    for (const target of [session.defaultSession, session.fromPartition('screen-output')]) {
-      target.setPermissionRequestHandler((_contents, _permission, callback) => callback(false))
-      target.setPermissionCheckHandler(() => false)
+    // Выбор выхода разрешён только renderer показа; камера и микрофон остаются запрещены.
+    for (const target of [session.defaultSession, session.fromPartition('persist:screen-output')]) {
+      const allowAudioOutput = (contents: Electron.WebContents | null, permission: string) =>
+        permission === 'speaker-selection' &&
+        !!contents &&
+        [audioDevicesWindow?.webContents, output?.webContents].includes(contents) &&
+        contents.getURL().startsWith('screen-app://app/index.html?')
+      target.setPermissionRequestHandler((contents, permission, callback, details) =>
+        callback(details.isMainFrame && allowAudioOutput(contents, permission)),
+      )
+      target.setPermissionCheckHandler((contents, permission, origin, details) =>
+        details.isMainFrame === true &&
+        (origin === 'screen-app://app' || origin === 'screen-app://app/') &&
+        allowAudioOutput(contents, permission),
+      )
       target.protocol.handle('screen-app', handleAppRequest)
     }
+    audioDevicesWindow = new BrowserWindow({ ...windowOptions(true), show: false })
+    secure(audioDevicesWindow)
+    await audioDevicesWindow.loadURL('screen-app://app/index.html?audio-devices=1')
+    await audioDevicesWindow.webContents.executeJavaScript(
+      "document.body.appendChild(document.createElement('audio'))",
+    )
+    audioOutput = new AudioOutput(
+      settings.value.audioOutput ?? '',
+      () => audioDevicesWindow!.webContents.executeJavaScript(`navigator.mediaDevices.enumerateDevices().then(
+        devices => devices.filter(d => d.kind === 'audiooutput' && d.deviceId && d.deviceId !== 'default' && d.deviceId !== 'communications')
+          .map((d, index) => ({ id: d.deviceId, label: d.label || 'Устройство звука ' + (index + 1) }))
+      )`),
+      async (id) => {
+        await setAudioSink(audioDevicesWindow!, id)
+        const current = output
+        if (current && !current.isDestroyed() && !current.webContents.isLoadingMainFrame())
+          await setAudioSink(current, id)
+      },
+      (id) => {
+        const previous = settings.value.audioOutput
+        settings.value.audioOutput = id
+        try {
+          settings.save()
+        } catch (error) {
+          settings.value.audioOutput = previous
+          throw error
+        }
+      },
+    )
+    const refreshAudioOutputs = () => audioOutput.refresh().catch(() => {
+      audioOutput.notice = 'Не удалось обновить список устройств звука.'
+    })
+    ipcMain.on('audio-devices-changed', (event) => {
+      if (event.sender === audioDevicesWindow?.webContents && event.senderFrame === event.sender.mainFrame)
+        void refreshAudioOutputs()
+    })
+    await refreshAudioOutputs()
     control = new BrowserWindow({
       ...windowOptions(),
       ...fitControlBounds(settings.value.control?.bounds, screen.getPrimaryDisplay().workArea),
@@ -490,6 +553,21 @@ app
     control.on('unmaximize', scheduleSave)
     control.on('close', saveWindowSettings)
     secure(control)
+    ipcMain.handle('select-audio-output', (event, id: unknown) => {
+      requireControl(event)
+      return audioOutput.select(id)
+    })
+    ipcMain.handle('prepare-audio-output', async (event) => {
+      const current = output
+      if (!current || event.sender !== current.webContents || event.senderFrame !== current.webContents.mainFrame)
+        throw new Error('Недоступно')
+      try {
+        await audioOutput.prepare((id) => setAudioSink(current, id))
+      } catch (error) {
+        if (output === current) closeOutput('Не удалось выбрать устройство звука')
+        throw error
+      }
+    })
     ipcMain.handle('state', (event) => {
       if (
         ![control?.webContents, output?.webContents].includes(event.sender) ||
diff --git a/electron/preload.ts b/electron/preload.ts
index 796f11f..3c743f0 100644
--- a/electron/preload.ts
+++ b/electron/preload.ts
@@ -3,6 +3,8 @@ import { contextBridge, ipcRenderer } from 'electron'
 import type { Command, Report, SceneReport, State } from '../src/types/screen.js'
 
 contextBridge.exposeInMainWorld('screenBridge', {
+  selectAudioOutput: (id: string) => ipcRenderer.invoke('select-audio-output', id),
+  prepareAudioOutput: () => ipcRenderer.invoke('prepare-audio-output'),
   planStatus: () => ipcRenderer.invoke('plan-status'),
   onlineState: () => ipcRenderer.invoke('online-state'),
   onlineAction: (intent: OnlineIntent) => ipcRenderer.invoke('online-action', intent),
@@ -23,3 +25,9 @@ contextBridge.exposeInMainWorld('screenBridge', {
   selectPackage: (key: string | null) => ipcRenderer.invoke('select-package', key),
   openMaterialsFolder: (key: string) => ipcRenderer.invoke('open-materials-folder', key),
 })
+
+if (new URLSearchParams(location.search).has('audio-devices')) {
+  navigator.mediaDevices.addEventListener('devicechange', () => {
+    ipcRenderer.send('audio-devices-changed')
+  })
+}
diff --git a/electron/window-settings.ts b/electron/window-settings.ts
index cd763b0..faaed77 100644
--- a/electron/window-settings.ts
+++ b/electron/window-settings.ts
@@ -4,6 +4,7 @@ import { dirname } from 'node:path'
 import type { Rectangle } from 'electron'
 
 export interface WindowPreferences {
+  audioOutput?: string
   control: { bounds: Rectangle; maximized: boolean } | null
   display: { id: number; label: string } | null
 }
@@ -22,6 +23,11 @@ export function parseWindowPreferences(value: unknown): WindowPreferences {
   const data = object(value)
   if (data.version !== 1) throw new Error('Неизвестная версия настроек окон')
   const result = defaults()
+  if (data.audioOutput !== undefined) {
+    if (typeof data.audioOutput !== 'string' || data.audioOutput.length > 1024)
+      throw new Error('Некорректное устройство звука')
+    result.audioOutput = data.audioOutput
+  }
   if (data.control !== null) {
     const c = object(data.control)
     const b = object(c.bounds)
diff --git a/scripts/smoke.cjs b/scripts/smoke.cjs
index 888010d..fb70b2d 100644
--- a/scripts/smoke.cjs
+++ b/scripts/smoke.cjs
@@ -243,12 +243,12 @@ app.whenReady().then(async () => {
     assert.equal((await evaluate('window.screenBridge.packages()')).length, 1)
     await evaluate(`window.screenBridge.show(${targetDisplay.id})`)
     let output = await poll(
-      () => BrowserWindow.getAllWindows().find((w) => w !== control),
+      () => BrowserWindow.getAllWindows().find((w) => w.webContents.getURL() === 'screen-app://app/index.html?output=1'),
       'output',
     )
     const inspect = (source) =>
       BrowserWindow.getAllWindows()
-        .find((w) => w !== control)
+        .find((w) => w.webContents.getURL() === 'screen-app://app/index.html?output=1')
         .webContents.executeJavaScript(source)
     await poll(async () => (await state()).channels.main.status === 'stopped', 'fixture prepared')
     if (process.platform === 'linux')
@@ -265,6 +265,19 @@ app.whenReady().then(async () => {
     await checkDisplay(output)
     await command({ action: 'play', channel: 'main' })
     await poll(async () => (await state()).channels.main.status === 'playing', 'fixture play')
+    const audioHost = await evaluate('window.screenBridge.host()')
+    assert.equal(await evaluate('!!document.querySelector("#audio-output")'), true)
+    assert.equal(await evaluate('window.screenBridge.selectAudioOutput("missing").then(() => false, () => true)'), true)
+    if (audioHost.audioOutputs.length) {
+      const device = audioHost.audioOutputs[0].id
+      const before = await inspect('document.querySelector("audio[data-channel=main-audio]").currentTime')
+      await evaluate(`window.screenBridge.selectAudioOutput(${JSON.stringify(device)})`)
+      assert.deepEqual(await inspect('Array.from(document.querySelectorAll("audio,video")).map(media => media.sinkId)'), [device, device, device, device])
+      assert.equal(await inspect('document.querySelector("audio[data-channel=main-audio]").paused'), false)
+      assert.ok(await inspect('document.querySelector("audio[data-channel=main-audio]").currentTime') >= before)
+      await evaluate('window.screenBridge.selectAudioOutput("")')
+      assert.equal((await evaluate('window.screenBridge.host()')).audioOutputId, '')
+    }
     await command({ action: 'pause', channel: 'main' })
     await command({ action: 'resume', channel: 'main' })
     await command({ action: 'stop', channel: 'main' })
@@ -599,7 +612,7 @@ app.whenReady().then(async () => {
     const oldSession = (await state()).session
     output.close()
     await evaluate(`window.screenBridge.show(${targetDisplay.id})`)
-    output = await poll(() => BrowserWindow.getAllWindows().find((w) => w !== control), 'reopened')
+    output = await poll(() => BrowserWindow.getAllWindows().find((w) => w.webContents.getURL() === 'screen-app://app/index.html?output=1'), 'reopened')
     await poll(async () => {
       const s = await state()
       return (
diff --git a/src/App.vue b/src/App.vue
index bf38afa..049f3a5 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -5,10 +5,11 @@ import OutputPage from './components/OutputPage.vue'
 
 const hasBridge = !!window.screenBridge
 const isOutput = new URLSearchParams(location.search).has('output')
+const isAudioDevices = new URLSearchParams(location.search).has('audio-devices')
 </script>
 
 <template>
-  <n-config-provider :theme="darkTheme">
+  <n-config-provider v-if="!isAudioDevices" :theme="darkTheme">
     <n-message-provider>
       <OutputPage v-if="isOutput && hasBridge" />
       <n-dialog-provider v-else>
diff --git a/src/components/ControlPage.vue b/src/components/ControlPage.vue
index 572be23..04b8052 100644
--- a/src/components/ControlPage.vue
+++ b/src/components/ControlPage.vue
@@ -205,6 +205,12 @@ async function refreshHost() {
   if (display.value === null) display.value = host.value.preferredDisplayId
   if (!host.value.displays.some((d) => d.id === display.value)) display.value = null
 }
+async function selectAudioOutput(id: string) {
+  await run(async () => {
+    await bridge!.selectAudioOutput(id)
+    await refreshHost()
+  })
+}
 onMounted(async () => {
   await run(async () => {
     if (!bridge) throw new Error('Откройте пульт в приложении Electron')
@@ -268,6 +274,19 @@ onUnmounted(() => {
             placeholder="Выберите внешний дисплей"
             :input-props="{ 'aria-label': 'Дисплей показа' }"
           />
+          <label for="audio-output-input">Вывод звука</label>
+          <n-select
+            id="audio-output"
+            :value="host.audioOutputId ?? ''"
+            :options="[
+              { label: 'По умолчанию в системе', value: '' },
+              ...(host.audioOutputs ?? []).map((device) => ({ label: device.label, value: device.id })),
+            ]"
+            :disabled="isBusy"
+            :input-props="{ id: 'audio-output-input', 'aria-label': 'Вывод звука' }"
+            @update:value="selectAudioOutput"
+          />
+          <n-alert v-if="host.audioOutputNotice" type="warning" role="status">{{ host.audioOutputNotice }}</n-alert>
           <n-space align="center">
             <n-button
               v-if="!state?.outputOpen"
diff --git a/src/components/OutputPage.vue b/src/components/OutputPage.vue
index 2921447..2f73d41 100644
--- a/src/components/OutputPage.vue
+++ b/src/components/OutputPage.vue
@@ -15,6 +15,7 @@ const imageError = ref(false)
 const timerDisplay = useScreenTimer(() => state.value)
 const bridge = window.screenBridge!
 let player: MediaPlayer | undefined
+let disposed = false
 let unsubscribe: (() => void) | undefined
 let revision = -1
 let sceneToken = ''
@@ -86,6 +87,7 @@ async function prepareScene(snapshot: State) {
   }
 }
 function apply(value: State) {
+  if (disposed) return
   if (value.revision <= revision) return
   revision = value.revision
   state.value = value
@@ -97,6 +99,12 @@ function apply(value: State) {
   }
 }
 onMounted(async () => {
+  try {
+    await bridge.prepareAudioOutput()
+  } catch {
+    return // Ошибка устройства отображается в пульте; не запускать звук на другом выходе.
+  }
+  if (disposed) return
   player = new MediaPlayer(
     { audio: audio.value!, video: video.value!, music: [musicA.value!, musicB.value!] },
     (report) => bridge.report(report),
@@ -105,6 +113,7 @@ onMounted(async () => {
   apply(await bridge.state())
 })
 onUnmounted(() => {
+  disposed = true
   sceneAbort?.abort()
   unsubscribe?.()
   player?.destroy()
diff --git a/src/types/screen.ts b/src/types/screen.ts
index 3ebf903..5d9f380 100644
--- a/src/types/screen.ts
+++ b/src/types/screen.ts
@@ -125,7 +125,14 @@ export interface DisplayInfo {
   id: number
   label: string
 }
+export interface AudioOutputInfo {
+  id: string
+  label: string
+}
 export interface HostInfo {
+  audioOutputs?: AudioOutputInfo[]
+  audioOutputId?: string
+  audioOutputNotice?: string
   notice: string
   sleepBlocked: boolean
   preferredDisplayId: number | null
@@ -146,6 +153,8 @@ export interface PlanStatus {
   notice: string
 }
 export interface ScreenBridge {
+  selectAudioOutput: (id: string) => Promise<void>
+  prepareAudioOutput: () => Promise<void>
   planStatus: () => Promise<PlanStatus>
   onlineState: () => Promise<OnlineState>
   onlineAction: (intent: OnlineIntent) => Promise<OnlineState>