diff --git a/Source/Core/AudioCommon/AOSoundStream.h b/Source/Core/AudioCommon/AOSoundStream.h
index 3a18f8ebc4..5900a8c8b5 100644
--- a/Source/Core/AudioCommon/AOSoundStream.h
+++ b/Source/Core/AudioCommon/AOSoundStream.h
@@ -41,10 +41,6 @@ public:
 		return true;
 	}
 
-	virtual bool usesMixer() const {
-		return true;
-	}
-
 	virtual void Update() override;
 
 #else
diff --git a/Source/Core/AudioCommon/AlsaSoundStream.h b/Source/Core/AudioCommon/AlsaSoundStream.h
index eaf4228a0f..e57d11270e 100644
--- a/Source/Core/AudioCommon/AlsaSoundStream.h
+++ b/Source/Core/AudioCommon/AlsaSoundStream.h
@@ -26,9 +26,6 @@ public:
 	static bool isValid() {
 		return true;
 	}
-	virtual bool usesMixer() const {
-		return true;
-	}
 
 	virtual void Update() override;
 
diff --git a/Source/Core/AudioCommon/CoreAudioSoundStream.h b/Source/Core/AudioCommon/CoreAudioSoundStream.h
index a0208e8242..c4d8ab7c14 100644
--- a/Source/Core/AudioCommon/CoreAudioSoundStream.h
+++ b/Source/Core/AudioCommon/CoreAudioSoundStream.h
@@ -25,9 +25,6 @@ public:
 	static bool isValid() {
 		return true;
 	}
-	virtual bool usesMixer() const {
-		return true;
-	}
 
 	virtual void Update();
 
diff --git a/Source/Core/AudioCommon/DSoundStream.h b/Source/Core/AudioCommon/DSoundStream.h
index b70a7b4e43..331c4581d3 100644
--- a/Source/Core/AudioCommon/DSoundStream.h
+++ b/Source/Core/AudioCommon/DSoundStream.h
@@ -65,7 +65,6 @@ public:
 	virtual void Stop();
 	virtual void Clear(bool mute);
 	static bool isValid() { return true; }
-	virtual bool usesMixer() const { return true; }
 	virtual void Update();
 
 #else
diff --git a/Source/Core/AudioCommon/NullSoundStream.h b/Source/Core/AudioCommon/NullSoundStream.h
index 21908f6a00..fd975259b0 100644
--- a/Source/Core/AudioCommon/NullSoundStream.h
+++ b/Source/Core/AudioCommon/NullSoundStream.h
@@ -27,6 +27,5 @@ public:
 	virtual void Stop() override;
 	virtual void Clear(bool mute) override;
 	static bool isValid() { return true; }
-	virtual bool usesMixer() const { return true; }
 	virtual void Update() override;
 };
diff --git a/Source/Core/AudioCommon/OpenALStream.h b/Source/Core/AudioCommon/OpenALStream.h
index 578d7e195a..0c3f932a38 100644
--- a/Source/Core/AudioCommon/OpenALStream.h
+++ b/Source/Core/AudioCommon/OpenALStream.h
@@ -57,7 +57,6 @@ public:
 	virtual void Stop() override;
 	virtual void Clear(bool mute) override;
 	static bool isValid() { return true; }
-	virtual bool usesMixer() const { return true; }
 	virtual void Update() override;
 
 private:
diff --git a/Source/Core/AudioCommon/OpenSLESStream.h b/Source/Core/AudioCommon/OpenSLESStream.h
index 9ea3e32e61..08deec6eb1 100644
--- a/Source/Core/AudioCommon/OpenSLESStream.h
+++ b/Source/Core/AudioCommon/OpenSLESStream.h
@@ -20,7 +20,6 @@ public:
 	virtual bool Start();
 	virtual void Stop();
 	static bool isValid() { return true; }
-	virtual bool usesMixer() const { return true; }
 
 private:
 	std::thread thread;
diff --git a/Source/Core/AudioCommon/PulseAudioStream.h b/Source/Core/AudioCommon/PulseAudioStream.h
index 6e818b04ff..eeeeebe836 100644
--- a/Source/Core/AudioCommon/PulseAudioStream.h
+++ b/Source/Core/AudioCommon/PulseAudioStream.h
@@ -25,8 +25,6 @@ public:
 
 	static bool isValid() {return true;}
 
-	virtual bool usesMixer() const {return true;}
-
 	virtual void Update() override;
 
 	void StateCallback(pa_context *c);
diff --git a/Source/Core/AudioCommon/XAudio2Stream.h b/Source/Core/AudioCommon/XAudio2Stream.h
index b0d4de4510..be76d919e8 100644
--- a/Source/Core/AudioCommon/XAudio2Stream.h
+++ b/Source/Core/AudioCommon/XAudio2Stream.h
@@ -60,7 +60,6 @@ public:
 	virtual void Update();
 	virtual void Clear(bool mute);
 	virtual void SetVolume(int volume);
-	virtual bool usesMixer() const { return true; }
 
 	static bool isValid() { return InitLibrary(); }
 
diff --git a/Source/Core/AudioCommon/XAudio2_7Stream.cpp b/Source/Core/AudioCommon/XAudio2_7Stream.cpp
index ea2e43708d..816d83d47b 100644
--- a/Source/Core/AudioCommon/XAudio2_7Stream.cpp
+++ b/Source/Core/AudioCommon/XAudio2_7Stream.cpp
@@ -260,8 +260,6 @@ void XAudio2_7::Stop()
 	}
 }
 
-bool XAudio2_7::usesMixer() const { return true; }
-
 #else
 
 struct StreamingVoiceContext2_7 {};
@@ -283,7 +281,6 @@ void XAudio2_7::Stop() {}
 void XAudio2_7::Update() {}
 void XAudio2_7::Clear(bool mute) {}
 void XAudio2_7::SetVolume(int volume) {}
-bool XAudio2_7::usesMixer() const { return false; }
 bool XAudio2_7::InitLibrary() { return false; }
 
 #endif
diff --git a/Source/Core/AudioCommon/XAudio2_7Stream.h b/Source/Core/AudioCommon/XAudio2_7Stream.h
index 4f0f8b5285..d7dc7ba302 100644
--- a/Source/Core/AudioCommon/XAudio2_7Stream.h
+++ b/Source/Core/AudioCommon/XAudio2_7Stream.h
@@ -66,7 +66,6 @@ public:
 	virtual void Update();
 	virtual void Clear(bool mute);
 	virtual void SetVolume(int volume);
-	virtual bool usesMixer() const;
 
 	static bool isValid() { return InitLibrary(); }