diff --git a/sdk/objc/native/src/audio/audio_source_sink.mm b/sdk/objc/native/src/audio/audio_source_sink.mm
index 11cf958591..65a812a450 100644
--- a/sdk/objc/native/src/audio/audio_source_sink.mm
+++ b/sdk/objc/native/src/audio/audio_source_sink.mm
@@ -13,7 +13,6 @@
                                           UInt32 bus_number,
                                           UInt32 num_frames,
                                           AudioBufferList* io_data) {
-    RTC_LOG(LS_VERBOSE) << __FUNCTION__;
     [sink_ onLocalAudioFrameWithFlags:flags timeStamp:time_stamp busNumber:bus_number numFrames:num_frames ioData:io_data];
   }
 
@@ -22,7 +21,6 @@
                                           UInt32 bus_number,
                                           UInt32 num_frames,
                                           AudioBufferList* io_data) {
-    RTC_LOG(LS_VERBOSE) << __FUNCTION__;
     [sink_ onRemoteAudioFrameWithFlags:flags timeStamp:time_stamp busNumber:bus_number numFrames:num_frames ioData:io_data];
   }
 }
\ No newline at end of file
diff --git a/sdk/objc/native/src/audio/voice_processing_audio_unit.mm b/sdk/objc/native/src/audio/voice_processing_audio_unit.mm
index 3905b6857a..1facd5f73b 100644
--- a/sdk/objc/native/src/audio/voice_processing_audio_unit.mm
+++ b/sdk/objc/native/src/audio/voice_processing_audio_unit.mm
@@ -111,17 +111,20 @@ static OSStatus GetAGCState(AudioUnit audio_unit, UInt32* enabled) {
     return false;
   }
 
-  // Enable input on the input scope of the input element.
-  UInt32 enable_input = 1;
-  result = AudioUnitSetProperty(vpio_unit_, kAudioOutputUnitProperty_EnableIO,
-                                kAudioUnitScope_Input, kInputBus, &enable_input,
-                                sizeof(enable_input));
-  if (result != noErr) {
-    DisposeAudioUnit();
-    RTCLogError(@"Failed to enable input on input scope of input element. "
-                 "Error=%ld.",
-                (long)result);
-    return false;
+  RTCAudioSessionConfiguration* webRTCConfiguration =  [RTCAudioSessionConfiguration webRTCConfiguration];
+  if (webRTCConfiguration.category != AVAudioSessionCategoryPlayback) {
+    // Enable input on the input scope of the input element.
+    UInt32 enable_input = 1;
+    result = AudioUnitSetProperty(vpio_unit_, kAudioOutputUnitProperty_EnableIO,
+                                  kAudioUnitScope_Input, kInputBus, &enable_input,
+                                  sizeof(enable_input));
+    if (result != noErr) {
+      DisposeAudioUnit();
+      RTCLogError(@"Failed to enable input on input scope of input element. "
+                  "Error=%ld.",
+                  (long)result);
+      return false;
+    }
   }
 
   // Enable output on the output scope of the output element.
@@ -153,36 +156,40 @@ static OSStatus GetAGCState(AudioUnit audio_unit, UInt32* enabled) {
     return false;
   }
 
-  // Disable AU buffer allocation for the recorder, we allocate our own.
-  // TODO(henrika): not sure that it actually saves resource to make this call.
-  UInt32 flag = 0;
-  result = AudioUnitSetProperty(
-      vpio_unit_, kAudioUnitProperty_ShouldAllocateBuffer,
-      kAudioUnitScope_Output, kInputBus, &flag, sizeof(flag));
-  if (result != noErr) {
-    DisposeAudioUnit();
-    RTCLogError(@"Failed to disable buffer allocation on the input bus. "
-                 "Error=%ld.",
-                (long)result);
-    return false;
+  if (webRTCConfiguration.category != AVAudioSessionCategoryPlayback) {
+    // Disable AU buffer allocation for the recorder, we allocate our own.
+    // TODO(henrika): not sure that it actually saves resource to make this call.
+    UInt32 flag = 0;
+    result = AudioUnitSetProperty(
+        vpio_unit_, kAudioUnitProperty_ShouldAllocateBuffer,
+        kAudioUnitScope_Output, kInputBus, &flag, sizeof(flag));
+    if (result != noErr) {
+      DisposeAudioUnit();
+      RTCLogError(@"Failed to disable buffer allocation on the input bus. "
+                  "Error=%ld.",
+                  (long)result);
+      return false;
+    }
   }
 
-  // Specify the callback to be called by the I/O thread to us when input audio
-  // is available. The recorded samples can then be obtained by calling the
-  // AudioUnitRender() method.
-  AURenderCallbackStruct input_callback;
-  input_callback.inputProc = OnDeliverRecordedData;
-  input_callback.inputProcRefCon = this;
-  result = AudioUnitSetProperty(vpio_unit_,
-                                kAudioOutputUnitProperty_SetInputCallback,
-                                kAudioUnitScope_Global, kInputBus,
-                                &input_callback, sizeof(input_callback));
-  if (result != noErr) {
-    DisposeAudioUnit();
-    RTCLogError(@"Failed to specify the input callback on the input bus. "
-                 "Error=%ld.",
-                (long)result);
-    return false;
+  if (webRTCConfiguration.category != AVAudioSessionCategoryPlayback) {
+    // Specify the callback to be called by the I/O thread to us when input audio
+    // is available. The recorded samples can then be obtained by calling the
+    // AudioUnitRender() method.
+    AURenderCallbackStruct input_callback;
+    input_callback.inputProc = OnDeliverRecordedData;
+    input_callback.inputProcRefCon = this;
+    result = AudioUnitSetProperty(vpio_unit_,
+                                  kAudioOutputUnitProperty_SetInputCallback,
+                                  kAudioUnitScope_Global, kInputBus,
+                                  &input_callback, sizeof(input_callback));
+    if (result != noErr) {
+      DisposeAudioUnit();
+      RTCLogError(@"Failed to specify the input callback on the input bus. "
+                  "Error=%ld.",
+                  (long)result);
+      return false;
+    }
   }
 
   state_ = kUninitialized;
@@ -204,24 +211,27 @@ static OSStatus GetAGCState(AudioUnit audio_unit, UInt32* enabled) {
   LogStreamDescription(format);
 #endif
 
-  // Set the format on the output scope of the input element/bus.
-  result =
-      AudioUnitSetProperty(vpio_unit_, kAudioUnitProperty_StreamFormat,
-                           kAudioUnitScope_Output, kInputBus, &format, size);
-  if (result != noErr) {
-    RTCLogError(@"Failed to set format on output scope of input bus. "
-                 "Error=%ld.",
-                (long)result);
-    return false;
+  RTCAudioSessionConfiguration* webRTCConfiguration =  [RTCAudioSessionConfiguration webRTCConfiguration];
+  if (webRTCConfiguration.category != AVAudioSessionCategoryPlayback) {
+    // Set the format on the output scope of the input element/bus.
+    result =
+        AudioUnitSetProperty(vpio_unit_, kAudioUnitProperty_StreamFormat,
+                            kAudioUnitScope_Output, kInputBus, &format, size);
+    if (result != noErr) {
+      RTCLogError(@"Failed to set format on output scope of input bus. "
+                  "Error=%ld.",
+                  (long)result);
+      return false;
+    }
   }
 
   // Set the format on the input scope of the output element/bus.
   result =
       AudioUnitSetProperty(vpio_unit_, kAudioUnitProperty_StreamFormat,
-                           kAudioUnitScope_Input, kOutputBus, &format, size);
+                          kAudioUnitScope_Input, kOutputBus, &format, size);
   if (result != noErr) {
     RTCLogError(@"Failed to set format on input scope of output bus. "
-                 "Error=%ld.",
+                "Error=%ld.",
                 (long)result);
     return false;
   }