Autotek AXL1450.4 AXL Car Amplifier New rugged heat sink design Military grade PCB design SEPP A/B analog class Mono block 4/2 & 4/2/1 ohm stable 4 X 175 @ 4 Ohms, 4 X 350 @ 2 Ohms, 2 X 700 WATTS @ 4 Ohms Bridged