I really miss FX Sound as I had to uninstall it to use Eartrumpet. When using both, Eartrumpet will only show the FX Sound icon in its volume mixer and won’t allow per app volume control like it does when I launch it without FX Sound.
As per this thread - EarTrumpet only shows main volume when FxSound used while switching playback device. · Issue #848 · File-New-Project/EarTrumpet · GitHub - “Suspect FxSound is hitting issues with their calls to SetDefaultEndPoint” , the problem is probably with FX Sound.