i have pioneer 1600 HU, cd player, not good
i have db650 up front, good
im thinking of upgrading to Alpine 9884 or 6, mainly for USB.
this will cost me close to 300$
for that money, i can get MOMO components, and probly a dynamat door kit.
i think MOMOs will make a bigger differance, but im leaning towards new HU, cuz i know thats a limiting factor in my system at the moment