diff --git a/firmware/mpeg.c b/firmware/mpeg.c
index f309a78b7d..6aca3c5d89 100644
--- a/firmware/mpeg.c
+++ b/firmware/mpeg.c
@@ -52,6 +52,13 @@ static char *units[] =
     "%"     /* Treble */
 };
 
+static int numdecimals[] =
+{
+    1,    /* Volume */
+    2,    /* Bass */
+    1     /* Treble */
+};
+
 static int minval[] =
 {
     0,    /* Volume */
@@ -78,6 +85,11 @@ char *mpeg_sound_unit(int setting)
     return units[setting];
 }
 
+int mpeg_sound_numdecimals(int setting)
+{
+    return numdecimals[setting];
+}
+
 int mpeg_sound_min(int setting)
 {
     return minval[setting];
@@ -738,15 +750,15 @@ int mpeg_val2phys(int setting, int value)
     switch(setting)
     {
         case SOUND_VOLUME:
-            result = value * 2;
+            result = value * 20;
             break;
         
         case SOUND_BASS:
-            result = value * 2;
+            result = value * 200;
             break;
         
         case SOUND_TREBLE:
-            result = value * 2;
+            result = value * 20;
             break;
     }
     return result;
diff --git a/firmware/mpeg.h b/firmware/mpeg.h
index 66bad48583..919f857738 100644
--- a/firmware/mpeg.h
+++ b/firmware/mpeg.h
@@ -32,6 +32,7 @@ int mpeg_sound_max(int setting);
 int mpeg_sound_default(int setting);
 int mpeg_val2phys(int setting, int value);
 char *mpeg_sound_unit(int setting);
+int mpeg_sound_numdecimals(int setting);
 struct mp3entry* mpeg_current_track(void);
 
 #define SOUND_VOLUME 0