Peter Chunk

Hi Peter, the second option did the trick! Thanks a lot for helping out!

Today I changed from Windows 10 to Windows 11. Now, the app isn't working anymore. I get this error messsage when I open the app: Equalizer APO was not installed for this device. When I start the Device Selector it shows that the APO is correctly installed. Nevertheless, when I use the EQ faders I can hear no effect of any sound change. Windows 11 states that I am already using the "best" audio drivers for my device. Until yesterday (= Windows 10 aera) I never had any problem while using Equalizer...