why do so many use compression? I'm a moron and I've never used it. What does it do for sound and why do so many players say "I can't imagine playing without it"? The only compression I ever had/used was on one of the first run SWR workingman's 12 combo's. It has a compression/limit knob that I hated using because I didn't like how it held back the big thumps I wanted.