diff --git a/src/components/App.vue b/src/components/App.vue
index e1cc5c9a42..0b19444554 100644
--- a/src/components/App.vue
+++ b/src/components/App.vue
@@ -97,6 +97,13 @@ watchEffect(() => {
   setThemeToCss(theme);
 });
 
+// 再生デバイスの初期化と変更の監視
+watchEffect(() => {
+  void store.actions.APPLY_DEVICE_ID_TO_AUDIO_CONTEXT({
+    device: store.state.savingSetting.audioOutputDevice,
+  });
+});
+
 // ソフトウェアを初期化
 const { hotkeyManager } = useHotkeyManager();
 const isEnginesReady = ref(false);
diff --git a/src/store/singing.ts b/src/store/singing.ts
index 611fe2ce22..8fc34c76fa 100644
--- a/src/store/singing.ts
+++ b/src/store/singing.ts
@@ -106,6 +106,7 @@ import { uuid4 } from "@/helpers/random";
 import { convertToWavFileData } from "@/sing/convertToWavFileData";
 import { generateWriteErrorMessage } from "@/helpers/fileHelper";
 import path from "@/helpers/path";
+import { showAlertDialog } from "@/components/Dialog/Dialog";
 
 const logger = createLogger("store/singing");
 
@@ -1682,6 +1683,22 @@ export const singingStore = createPartialStore<SingingStoreTypes>({
     },
   },
 
+  APPLY_DEVICE_ID_TO_AUDIO_CONTEXT: {
+    action(_, { device }) {
+      if (audioContext) {
+        const sinkId = device === "default" ? "" : device;
+        audioContext.setSinkId(sinkId).catch((err: unknown) => {
+          void showAlertDialog({
+            type: "error",
+            title: "エラー",
+            message: "再生デバイスが見つかりません",
+          });
+          throw err;
+        });
+      }
+    },
+  },
+
   /**
    * レンダリングを行う。レンダリング中だった場合は停止して再レンダリングする。
    */
diff --git a/src/store/type.ts b/src/store/type.ts
index fae93613da..50c523d22a 100644
--- a/src/store/type.ts
+++ b/src/store/type.ts
@@ -1326,6 +1326,10 @@ export type SingingStoreTypes = {
   SYNC_TRACKS_AND_TRACK_CHANNEL_STRIPS: {
     action(): void;
   };
+
+  APPLY_DEVICE_ID_TO_AUDIO_CONTEXT: {
+    action(payload: { device: string }): void;
+  };
 };
 
 export type SingingCommandStoreState = {
diff --git a/src/type/globals.d.ts b/src/type/globals.d.ts
index 6c761fa17f..9708bb15e5 100644
--- a/src/type/globals.d.ts
+++ b/src/type/globals.d.ts
@@ -9,6 +9,10 @@ declare global {
     setSinkId(deviceID: string): Promise<undefined>; // setSinkIdを認識してくれないため
   }
 
+  interface AudioContext {
+    setSinkId: (sinkId: string) => Promise<void>;
+  }
+
   interface Window {
     readonly [SandboxKey]: import("./preload").Sandbox;
   }