Sony XM-ZR604 Xplod 4/3 Channel Stereo Power Mosfet Car Amplifier (600 Watts) 110W x 4 Max Power into 4 Ohms 150W x 2 (at 2 Ohms) + 300W x1 (at 4 Ohms) Max Power 60W x 2 RMS into 4 Ohms 65W x 4 RMS into 2 Ohms High Level Sensing Power On