diff --git a/manual/configure_rockbox/sound_settings.tex b/manual/configure_rockbox/sound_settings.tex
index 6da7f58d49..ed39cd1f27 100755
--- a/manual/configure_rockbox/sound_settings.tex
+++ b/manual/configure_rockbox/sound_settings.tex
@@ -27,7 +27,10 @@ as a negative number. Volume can be adjusted from a
   frequencies below 300Hz. Bass boost can be set from 0 to 24 dB in
   increments of 2 dB. A setting of 0 means that low frequencies are unaltered 
   (flat response).}
-  \opt{ipodnano,ipodcolor,ipodvideo,x5}{\fixme{TODO - platform specific description.}}
+  \opt{ipodnano,ipodcolor,ipodvideo}{This emphasizes or suppresses the
+  lower (Bass) sounds in the track. 0dB means that bass in unaltered
+  (flat response). The minimum setting is -6dB and the maximum is 9dB.}
+  \opt{x5}{\fixme{add platform specific information here}}
 
 \section{Treble}
   \opt{player,recorder,recorderv2fm,ondio}{This emphasises or suppresses the
@@ -37,7 +40,10 @@ as a negative number. Volume can be adjusted from a
   frequencies above 1.5kHz. Treble boost can be set from 0 to 6 dB in
   increments of 2 dB. A setting of 0 means that high frequencies are unaltered
   (flat response).}
-  \opt{ipodnano,ipodcolor,ipodvideo,x5}{\fixme{TODO - platform specific description.}}
+  \opt{ipodnano,ipodcolor,ipodvideo}{This setting emphasizes or suppresses
+  the higher (treble) sounds in the track. 0dB means that treble is unaltered
+  (flat response). The minimum setting -6dB and the maximum is 9dB.}
+  \opt{x5}{\fixme{add platform specific information here}}
 
 \section{Balance}
   This setting controls the balance between the left and right channels.  The