Blaupunkt THA-475 PnP 4/3/2 Channel 720W Amplifier 720 Watt 4/3/2 Channel Amplifier Power at 4 ohms.: 4 x 75W RMS (150W max.) / 2 x 180W RMS (360W max.) Power at 2 ohms. Stereo: 4 x 85W RMS (170W max.) Variable Low / High Pass Filter Features RCA, High-Level, and Direct 3.5mm Stereo Aux. Input