Precision Power i450.1 PPI iON Series 450 Watts Class D Monoblock Amplifier RMS Power Rating: 4 ohms: 260 watts x 1 chan./2 ohms: 450 watts x 1 chan. Pulse Width Modulated MOSFET power supply Wired remote bass level control included LED power (green) and protect (red) indicators 4-way protection circuitry (thermal, overload, and speaker short protection)