don't limit yourself to just qsc or crown pro amps. there is also, crest audio, hafler, mackie, peavey, samson, and more i can't think of. the fan is a non issue imo, you can throw a resistor on it or replace the fan with a quieter one. i am running a crown xls 402 with a resistor to slow down the fan. i run it bridged on a pro subwoofer for many hours at a time. it never even gets close to warm.