diff --git a/app/src/main/cpp/skyline/services/am/controller/IAudioController.cpp b/app/src/main/cpp/skyline/services/am/controller/IAudioController.cpp
index 99c9995d..1bec0df0 100644
--- a/app/src/main/cpp/skyline/services/am/controller/IAudioController.cpp
+++ b/app/src/main/cpp/skyline/services/am/controller/IAudioController.cpp
@@ -5,5 +5,21 @@
 
 namespace skyline::service::am {
     IAudioController::IAudioController(const DeviceState &state, ServiceManager &manager) : BaseService(state, manager, Service::am_IAudioController, "am:IAudioController", {
+        {0x0, SFUNC(IAudioController::SetExpectedMasterVolume)},
+        {0x1, SFUNC(IAudioController::GetMainAppletExpectedMasterVolume)},
+        {0x2, SFUNC(IAudioController::GetLibraryAppletExpectedMasterVolume)}
     }) {}
+
+    void IAudioController::SetExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        mainAppletVolume = request.Pop<float>();
+        libraryAppletVolume = request.Pop<float>();
+    }
+
+    void IAudioController::GetMainAppletExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        response.Push<float>(mainAppletVolume);
+    }
+
+    void IAudioController::GetLibraryAppletExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        response.Push<float>(libraryAppletVolume);
+    }
 }
diff --git a/app/src/main/cpp/skyline/services/am/controller/IAudioController.h b/app/src/main/cpp/skyline/services/am/controller/IAudioController.h
index e272bce9..0d8d1326 100644
--- a/app/src/main/cpp/skyline/services/am/controller/IAudioController.h
+++ b/app/src/main/cpp/skyline/services/am/controller/IAudioController.h
@@ -11,7 +11,26 @@ namespace skyline::service::am {
      * @brief This has functions relating to volume control (https://switchbrew.org/wiki/Applet_Manager_services#IAudioController)
      */
     class IAudioController : public BaseService {
+      private:
+        float mainAppletVolume{1.0f}; //!< The volume that is expected to be used for the main applet
+        float libraryAppletVolume{1.0f}; //!< The volume that is expected to be used for the library applet
+
       public:
         IAudioController(const DeviceState &state, ServiceManager &manager);
+
+        /**
+         * @brief This sets the expected volumes for an application (https://switchbrew.org/wiki/Applet_Manager_services#SetExpectedMasterVolume)
+         */
+        void SetExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
+        /**
+         * @brief This returns the main applet volume that is expected by the application (https://switchbrew.org/wiki/Applet_Manager_services#GetMainAppletExpectedMasterVolume)
+         */
+        void GetMainAppletExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
+        /**
+         * @brief This returns the library applet volume that is expected by the application (https://switchbrew.org/wiki/Applet_Manager_services#GetLibraryAppletExpectedMasterVolume)
+         */
+        void GetLibraryAppletExpectedMasterVolume(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
     };
 }