I have always wondered what exactly these options are for. Can someone help? Also, whats the main difference between reverb and delay? I don't see it. Thanks guys!
Mid treble and bass are your tone controls. Treble is the high notes, bass is the low notes, and mids is what's in between. I tend to leave them at 12:00, and adjust them a little bit as necessary to clarify my tone, or give it more definition or crunch, depending on what I'm doing.
Reverb is an ambiance that is added to the sound, giving the feel of more space
Delay is a straight echo, giving an exact reproduction of the sound (although usually at a softer volume) and gives a slapback effect.