Precision Power P600.2 Phantom Series Class D 600 Watt 2-Channel Amplifier RMS Power Rating (14.4V): 4 ohms: 190 watts x 2 chan./2 ohms: 300 watts x 2 chan./Bridged, 4 ohms: 600 watts x 1 chan. RMS Power Rating (12V): 4 ohms: 100 watts x 2 chan./2 ohms: 200 watts x 2 chan./Bridged, 4 ohms: 400 watts x 1 chan. MOSFET power supply LED power (green) and protect (red) indicators Heavy duty aluminum alloy heat sink for extreme heat dissipation