The tone controls on a guitar amp are pretty obvious, but what does the presence knob affect? It's a subtle effect but can sure make or break a sound. It doesn't seem to be treble or midrange boost, ...
I have an Aria MAC57/7 (7 string). Excuse the dust (the flash on the camera shows it up...) It has a dual humbucker setup and a set of controls that I never fully got to grips with. I assume the ...