diff --git a/GITADORA-Arena-Model.md b/GITADORA-Arena-Model.md
index db26436..59fa764 100644
--- a/GITADORA-Arena-Model.md
+++ b/GITADORA-Arena-Model.md
@@ -89,7 +89,7 @@ If you have a Xonar then the game will attempt to use it. If you want to use ano
 
 ### Using WASAPI
 
-If you don't have a 7.1 surround system, you won't hear any sound effects (drum / guitar key sounds). In this case, you should turn on `GitaDora Two Channel Audio` option which downmixes everything to stereo. Avoid using 2-channel patches if possible as they often result in buzzing noise.
+If you don't have a 7.1 surround system, you won't hear any sound effects (drum / guitar key sounds). In this case, you should turn on `GitaDora Two Channel Audio` option which downmixes everything to stereo. If you need to adjust the volume ratio between BGM vs. sound effects, go to the test menu and adjust volume level. Avoid using 2-channel patches if possible as they often result in buzzing noise.
 
 If you need shared WASAPI, look for patches.