Its probably time for an upgrade, considering I have been using the same electric guitar and amp for about 8 years now. I don't have the gain high at all, but it still sounds unclear. Whats the difference between all the different settings (Mid, Treble, ect)? I never really paid attention to it. I fool around with them and adjust them until I get a good sound, but I'd like to understand what it is Im actually changing.