ok, ive read the basics and this didnt really help me. my question is, what is the differences between classes and the like? mosfet toroidial class A-G, A/B digital single ended im no electrical engineer by any means. can someone help me out? i want good amps for my HT but cant see spending that much for a new one. want to hit the local pawn shops for good amps but want to know which is which.