diff --git a/include/config.h b/include/config.h
index 0f499d6b..3661ec8b 100644
--- a/include/config.h
+++ b/include/config.h
@@ -113,7 +113,7 @@
 #define LONGER_POLES
 // Number of possible unique model ID's (keep it higher than 256)
 #define MODEL_ID_COUNT 256
-// Increase audio heap size to allow for more concurrent notes to be played and for more custom sequences/banks to be imported (does nothing with EU and SH versions)
+// Increase audio heap size to allow for more concurrent notes to be played and for more custom sequences/banks to be imported (not supported for SH)
 #define EXPAND_AUDIO_HEAP
 // Allow all surfaces types to have force, (doesn't require setting force, just allows it to be optional).
 #define ALL_SURFACES_HAVE_FORCE
diff --git a/src/audio/data.c b/src/audio/data.c
index 8518737a..fcbd8fb8 100644
--- a/src/audio/data.c
+++ b/src/audio/data.c
@@ -13,14 +13,14 @@ extern struct OSMesgQueue OSMesgQueue3;
 //To increase reverb window sizes beyond 64, please increase the REVERB_WINDOW_SIZE_MAX in heap.c by a factor of 0x40.
 #ifdef VERSION_EU
 struct ReverbSettingsEU sReverbSettings[8] = {
-    {/*Downsample Rate*/ 4,/*Window Size*/ 16,/*Gain*/ 0x2FFF },
-    {/*Downsample Rate*/ 4,/*Window Size*/ 10,/*Gain*/ 0x47FF },
-    {/*Downsample Rate*/ 4,/*Window Size*/ 16,/*Gain*/ 0x2FFF },
-    {/*Downsample Rate*/ 4,/*Window Size*/ 15,/*Gain*/ 0x3FFF },
-    {/*Downsample Rate*/ 4,/*Window Size*/ 12,/*Gain*/ 0x4FFF },
-    {/*Downsample Rate*/ 4,/*Window Size*/ 16,/*Gain*/ 0x2FFF }, //Duplicate of the first index
-    {/*Downsample Rate*/ 4,/*Window Size*/ 10,/*Gain*/ 0x47FF }, //Duplicate of the second index
-    {/*Downsample Rate*/ 4,/*Window Size*/ 10,/*Gain*/ 0x37FF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 64,/*Gain*/ 0x2FFF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 40,/*Gain*/ 0x47FF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 64,/*Gain*/ 0x2FFF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 60,/*Gain*/ 0x3FFF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 48,/*Gain*/ 0x4FFF },
+    {/*Downsample Rate*/ 1,/*Window Size*/ 64,/*Gain*/ 0x2FFF }, //Duplicate of the first index
+    {/*Downsample Rate*/ 1,/*Window Size*/ 40,/*Gain*/ 0x47FF }, //Duplicate of the second index
+    {/*Downsample Rate*/ 1,/*Window Size*/ 40,/*Gain*/ 0x37FF },
 };
 /**
 1: Frequency
diff --git a/src/audio/data.h b/src/audio/data.h
index c65975ef..80bc9581 100644
--- a/src/audio/data.h
+++ b/src/audio/data.h
@@ -113,13 +113,13 @@ extern u16 gUnused80226E98[0x10];
 extern u32 gAudioRandom;
 
 #ifdef EXPAND_AUDIO_HEAP
-#if defined(VERSION_US) || defined(VERSION_JP)
+#if defined(VERSION_US) || defined(VERSION_JP) || defined(VERSION_EU)
 #define EXT_AUDIO_HEAP_SIZE 0x27400
 #define EXT_AUDIO_INIT_POOL_SIZE 0x8000
 #else
-// EU and SH versions not yet supported for extended audio heap
-#define EXT_AUDIO_HEAP_SIZE 0x27400
-#define EXT_AUDIO_INIT_POOL_SIZE 0x8000
+// SH not yet supported for expanded audio heap
+#define EXT_AUDIO_HEAP_SIZE 0x0
+#define EXT_AUDIO_INIT_POOL_SIZE 0x0
 #endif
 #else
 #define EXT_AUDIO_HEAP_SIZE 0x0
@@ -153,8 +153,8 @@ extern OSMesgQueue *D_SH_80350FA8;
 
 #if defined(VERSION_EU) || defined(VERSION_SH)
 #define UNUSED_COUNT_80333EE8 24
-#define AUDIO_HEAP_SIZE (0x32b00 + EXT_AUDIO_HEAP_SIZE + EXT_AUDIO_INIT_POOL_SIZE + BETTER_REVERB_SIZE)
-#define AUDIO_INIT_POOL_SIZE (0x2c00 + EXT_AUDIO_INIT_POOL_SIZE)
+#define AUDIO_HEAP_SIZE (0x3AB00 + EXT_AUDIO_HEAP_SIZE + EXT_AUDIO_INIT_POOL_SIZE + BETTER_REVERB_SIZE)
+#define AUDIO_INIT_POOL_SIZE (0x2C00 + EXT_AUDIO_INIT_POOL_SIZE)
 #else
 #define UNUSED_COUNT_80333EE8 16
 #define AUDIO_HEAP_SIZE (0x34750 + EXT_AUDIO_HEAP_SIZE + EXT_AUDIO_INIT_POOL_SIZE + BETTER_REVERB_SIZE)