Index: manual/configure_rockbox/sound_settings.tex
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--- manual/configure_rockbox/sound_settings.tex	(revision 30196)
+++ manual/configure_rockbox/sound_settings.tex	(working copy)
@@ -485,12 +485,16 @@
     \end{btnmap}
 
   \item[Pre-cut.]
-  If too much gain is added through the graphical EQ, your music may distort.
-  The \setting{Precut} setting allows you to adjust the overall gain of the EQ.
+  If too much positve gain is added through the graphical EQ, your music may 
+  distort.  The \setting{Precut} setting allows you to apply a global negative
+  gain to decoded audio, canceling out positive gain from the EQ.  This will
+  prevent distortion when boosting certain frequency ranges, at the expense of 
+  making audio quieter.
+  
+  Alternatively, precut can be used with a flat EQ curve to implement a volume
+  cap.  For example, on a player that allows overdriving the headphone output
+  to +6dB, maximum volume can be capped to +0dB by applying 6dB of precut.
 
-  If your music distorts when using the EQ, trying changing this setting to a 
-  negative value.
-
 \item[Simple EQ.]
 This option provides an easier alternative for those who are daunted by all of
 the parameters that can be adjusted using the graphical EQ. With the