diff --git a/Core/HLE/sceAtrac.cpp b/Core/HLE/sceAtrac.cpp
index 7d3edd8fa6..6a74c32ab0 100644
--- a/Core/HLE/sceAtrac.cpp
+++ b/Core/HLE/sceAtrac.cpp
@@ -630,7 +630,7 @@ u32 _AtracDecodeData(int atracID, u8* outbuf, u32 *SamplesNum, u32* finish, int
 							if (avret < 0) {
 								ERROR_LOG(ME, "swr_convert: Error while converting %d", avret);
 							}
-							__AdjustBGMVolume((s16 *)out, numSamples * atrac->pFrame->channels);
+							__AdjustBGMVolume((s16 *)out, numSamples * atrac->atracOutputChannels);
 						}
 					}
 					av_free_packet(&packet);
@@ -1780,7 +1780,7 @@ int sceAtracLowLevelDecode(int atracID, u32 sourceAddr, u32 sourceBytesConsumedA
 					if (avret < 0) {
 						ERROR_LOG(ME, "swr_convert: Error while converting %d", avret);
 					}
-					__AdjustBGMVolume((s16 *)out, numSamples * atrac->pFrame->channels);
+					__AdjustBGMVolume((s16 *)out, numSamples * atrac->atracOutputChannels);
 				}
 				av_free_packet(&packet);
 				if (got_frame)
diff --git a/Core/HW/SimpleAT3Dec.cpp b/Core/HW/SimpleAT3Dec.cpp
index f6016f5576..e5d7b98bff 100644
--- a/Core/HW/SimpleAT3Dec.cpp
+++ b/Core/HW/SimpleAT3Dec.cpp
@@ -142,7 +142,8 @@ bool SimpleAT3::Decode(void* inbuf, int inbytes, uint8_t *outbuf, int *outbytes)
 			ERROR_LOG(ME, "swr_convert: Error while converting %d", swrRet);
 			return false;
 		}
-		__AdjustBGMVolume((s16 *)outbuf, numSamples * frame_->channels);
+		// We always convert to stereo.
+		__AdjustBGMVolume((s16 *)outbuf, numSamples * 2);
 	}
 
 	return true;