which amp to chose first up..Rockford Fosgate P1000X4D Punch Series Class D Full Range 4-Channel Car Amplifier RMS Power Rating: 4 ohms: 150 watts x 4 chan. 2 ohms: 250 watts x 4 chan. Bridged, 4 ohms: 500 watts x 2 chan. MOSFET power supply LED power (green) and protect (red) indicators Punch EQ 2 ...