For those of you guys that upgraded from the crappy mach 460 amps, what did you replace them with and how is your system setup? Did you use dual 2 channel amps, a single 4 channel. (not including subs, just door and rear panel speakers)

 

amazing, no one replaced their factory amps huh?

 

if you replace the amps, you will need to replace the speakers.

my cardomain page shows my system.