Add More EQ Bands

[doolhoofd]

And, one more, posted today:

@ayukovt

I would love to see FxSound allow to adjust lower frequencies than 88Hz. Personally my headphones have absolutely zero bass and I really don’t wanna use the built-in Windows EQ since it takes forever to get into it and disable it whenever I have to record something in OBS but the advantages of it is that it delivers better bass due to allowing to adjust frequencies as low as 50-60Hz however the advantage of FxSound is that I can access it super quickly and it creates a virtual audio device where the EQ is applied while the Windows EQ applies for the audio device that is currently selected.