diff --git a/controller/cuda_grid_controller/config.py b/controller/cuda_grid_controller/config.py
index 219d81f..bffd9cc 100644
--- a/controller/cuda_grid_controller/config.py
+++ b/controller/cuda_grid_controller/config.py
@@ -92,6 +92,17 @@ class InstanceCfg(BaseModel):
         default="volume@music",
         description="Target filter для управления громкостью music chain (Phase 5c ducking)",
     )
+    audio_output_volume_target: str = Field(
+        default="volume@output_audio",
+        description="ZMQ target volume filter в video pipeline (после astreamselect) для UI-mute audio. "
+                    "0 = mute, 1 = unmute. Phase 7 filter pipeline.",
+    )
+    audio_input_select_target: str = Field(
+        default="astreamselect@audio_input",
+        description="ZMQ target astreamselect filter — выбор audio source в video pipeline. "
+                    "map=0 → live-audio (sidecar), map=1 → anullsrc (decouple от jittery RTSP). "
+                    "UI mute → map=1 + volume=0; unmute → map=0 + volume=1.",
+    )
     intercom_volume_target: str = Field(
         default="volume@intercom",
         description="Target filter для управления громкостью intercom (Phase 5c)",
diff --git a/controller/cuda_grid_controller/dispatch.py b/controller/cuda_grid_controller/dispatch.py
index 0b99e4f..edc6221 100644
--- a/controller/cuda_grid_controller/dispatch.py
+++ b/controller/cuda_grid_controller/dispatch.py
@@ -218,6 +218,39 @@ class CommandDispatcher:
         использует cell 0 как main slot. Семантика идентична: cell_map 0 = cam_index."""
         await self.set_main_cam(instance, cam_index)
 
+    async def set_audio_output_enabled(self, instance: str, enabled: bool) -> bool:
+        """Phase 7 Вариант 2: mute = astreamselect map=1 (anullsrc) + volume=0.
+        unmute = astreamselect map=0 (live-audio) + volume=1. astreamselect
+        decouples downstream от jittery live-audio RTSP — при mute frames
+        идут только через anullsrc chain, video не зависит от audio sidecar."""
+        inst = self._find_instance(instance)
+        if inst is None:
+            return False
+        client = self._client(inst)
+        input_map = "0" if enabled else "1"
+        volume = "1.0" if enabled else "0.0"
+        try:
+            reply1 = await client.send_command(
+                inst.audio_input_select_target, "map", input_map
+            )
+            reply2 = await client.send_command(
+                inst.audio_output_volume_target, "volume", volume
+            )
+            log.info("dispatch.audio_output_set",
+                     instance=instance, enabled=enabled,
+                     input_map=input_map, volume=volume,
+                     select_reply=reply1, volume_reply=reply2)
+        except (TimeoutError, Exception) as e:
+            log.warning("dispatch.audio_output_fail",
+                        instance=instance, error=str(e))
+            return False
+        await self.state.set_audio_output_enabled(instance, enabled)
+        if self.on_state_change:
+            await self.on_state_change(instance, "audio_output", "on" if enabled else "off")
+        if self.on_event:
+            await self.on_event(instance, "audio_output_changed", {"enabled": enabled})
+        return True
+
     async def _reload_icon(self, instance: str, icon_name: str) -> None:
         """Invalidate cached icon atlas во всех cuda_grid instances — каждый
         имеет свой кеш."""
diff --git a/controller/cuda_grid_controller/http_api.py b/controller/cuda_grid_controller/http_api.py
index 2576688..5b04c84 100644
--- a/controller/cuda_grid_controller/http_api.py
+++ b/controller/cuda_grid_controller/http_api.py
@@ -34,6 +34,10 @@ class AutoLayoutReq(BaseModel):
     enabled: bool
 
 
+class AudioOutputReq(BaseModel):
+    enabled: bool
+
+
 def create_app(
     cfg: Config, state: ControllerState, dispatcher: CommandDispatcher,
     snapshot_history: SnapshotHistory | None = None,
@@ -80,6 +84,22 @@ def create_app(
             }
         return {"instances": out}
 
+    @app.get("/audio-output/{instance}")
+    async def audio_output_get(instance: str) -> dict[str, Any]:
+        _check_instance(instance)
+        return {
+            "instance": instance,
+            "enabled": await state.get_audio_output_enabled(instance),
+        }
+
+    @app.post("/audio-output/{instance}")
+    async def audio_output_set(instance: str, req: AudioOutputReq) -> dict[str, Any]:
+        _check_instance(instance)
+        ok = await dispatcher.set_audio_output_enabled(instance, req.enabled)
+        if not ok:
+            raise HTTPException(500, "audio output ZMQ command failed (см. logs)")
+        return {"ok": True, "instance": instance, "enabled": req.enabled}
+
     @app.post("/layout/{instance}/set")
     async def set_layout(instance: str, req: LayoutSetReq) -> dict[str, Any]:
         _check_instance(instance)
diff --git a/controller/cuda_grid_controller/state.py b/controller/cuda_grid_controller/state.py
index 94243ee..8cdff5c 100644
--- a/controller/cuda_grid_controller/state.py
+++ b/controller/cuda_grid_controller/state.py
@@ -13,6 +13,7 @@ class InstanceState:
     name: str
     active_layout: str
     overlays: dict[str, Overlay] = field(default_factory=dict)
+    audio_output_enabled: bool = True
     # Future: fps_out, dropped_frames, motion_cameras, last_event_ts
 
 
@@ -66,6 +67,19 @@ class ControllerState:
             st = self.instances.get(instance)
             return list(st.overlays.values()) if st else []
 
+    # ─── Audio output mute ──────────────────────────────────────────
+
+    async def set_audio_output_enabled(self, instance: str, enabled: bool) -> None:
+        async with self._lock:
+            st = self.instances.get(instance)
+            if st is not None:
+                st.audio_output_enabled = enabled
+
+    async def get_audio_output_enabled(self, instance: str) -> bool:
+        async with self._lock:
+            st = self.instances.get(instance)
+            return st.audio_output_enabled if st else True
+
     async def clear_overlays(self, instance: str) -> int:
         async with self._lock:
             st = self.instances.get(instance)
diff --git a/controller/cuda_grid_controller/static/index.html b/controller/cuda_grid_controller/static/index.html
index 6468b91..a719c4c 100644
--- a/controller/cuda_grid_controller/static/index.html
+++ b/controller/cuda_grid_controller/static/index.html
@@ -57,7 +57,7 @@ pre { background:#0f0f12; padding:8px; border-radius:4px; font-size:11px; overfl
 
     <!-- Audio -->
     <div class="card">
-      <h2>Audio source</h2>
+      <h2>Audio source <span style="float:right; font-size:11px"><label><input id="audio-out-tog" type="checkbox" onchange="toggleAudioOut()"> вывод аудио в стрим</label></span></h2>
       <div class="row" id="audio-buttons"></div>
     </div>
 
@@ -181,6 +181,18 @@ async function toggleAuto() {
   await api('POST', `/auto-layout/${INSTANCE}`, {enabled}, 'auto ' + (enabled?'ON':'OFF'));
 }
 
+// ── Audio output toggle (Phase 7 volume@output_audio) ─
+async function loadAudioOut() {
+  const r = await fetch(`/audio-output/${INSTANCE}`);
+  if (!r.ok) return;
+  const d = await r.json();
+  document.getElementById('audio-out-tog').checked = d.enabled;
+}
+async function toggleAudioOut() {
+  const enabled = document.getElementById('audio-out-tog').checked;
+  await api('POST', `/audio-output/${INSTANCE}`, {enabled}, 'audio out ' + (enabled?'ON':'OFF'));
+}
+
 // ── Layout buttons ────────────────────────────────────
 async function loadLayouts() {
   const r = await fetch(`/layouts/${INSTANCE}`);