People may cringe but I have ran 4 different amps from this line and never had an issue. I've ran the 1000W mono block the 650 mono block and 2 of the 4ch amps. still have the 650 and a 4ch in my wifes car. they are a touch overrated but good none the less. grab a universal 'bass knob' and good to goThanks Steve...I've looked at those 5 channel offerings from Crutchfield. As far as my sub, I've got a ID10 D2 at the moment. It's cheap enough to buy another one (D4) if I find the right amp that does the power I want...even if it's at 2ohm.

Soundstream Picasso Nano PN5.640D
Compact 5-channel car amplifier 60 watts RMS x 4 at 4 ohms + 350 watts RMS x 1 at 2 ohms