Autotek SM1400.4 Street Machine Car Amplifier Brushed aluminum heat sink design Illuminated power VU meter Military grade PCB design SEPP A/B analog class multi-channel and D-class models 4 X 175 @ 4 Ohms, 4 X 350 @ 2 Ohms, 2 X 700 WATTS @ 4 Ohms Bridged