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1. Dynamic (fluctuating) volume when there are 2 or more active sound sources. Updated 22 Mar 2016.

Description:  When playing a game and listening to music at the same time, the volume for either of the applications will fluctuate, for example the music volume will lower down when there is a high noise coming from the game (like explosions). 

I haven’t found any fix for this except the workaround that’s presented below.  From what it seems its unlikely that C-media will ever fix this on their side.


Windows XP workaround fix

Set Windows Volume to 80%-90%. I noticed that this issue is only present when Windows volume(or panel volume) is above 80-90%.  So my recommendation is to not exceed this limit.

Windows Vista/7/8/10 workaround fix

Update 22 Mar 2016: Windows Vista/7/8/10 workaround fix might not work properly. Seems the dynamic volume is a Windows issue here. I will have to do further research into this matter.

Workaround here is slightly different from the one in WinXP, you’ll have to set the volume in each application at ~ 80%-90%.  You can set Windows Volume to 100%.


Win7-safe-volume-limitOther notes:

Please note that moving the mixer playback sliders in ASUS Audio Center above “76” or moving digital volume sliders in C-Media Control Panel above “0” dB will cause the same issues.

Until further notice, all driver versions (UNi or Asus) have this problem.


This page is only for discussing the problems and solutions described above. For general help, comment on the main UNi Xonar page.


  1. NoobsCry    19 Jul 2016 @ 10:49   

    Hi all!
    Just installed the driver but I dont see the software to play around with the sound.
    Where can I get to the sound mixer ? I am using W7.


    • CarvedInside    19 Jul 2016 @ 18:57   

      Hi. Have you installed drivers with Low DPC Latency configuration? Look for “Asus Audio Center” or “C-Media Audio Panel” in Start->Programs->UNi Xonar Audio.

      BTW this is not the place for help. In the future use this page.



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