Precision Power i1000.1 650W Class D Monoblock Amplifier iON Series Mono block Class D Car Amplifier RMS Power Rating: 4 ohms: 350 watts x 1 chan. / 2 ohms: 600 watts x 1 chan. Pulse Width Modulated MOSFET power supply LED power (green) and protect (red) indicators SMT (Surface Mount Technology) for easy installation