Skar Audio SK-M5001D Compact Monoblock Class D MOSFET Car Amplifier, 500W Ultra Compact MOSFET Monoblock Class D Car Amplifier RMS power @ 1 Ohm: 500 Watts x 1 Channel (14.4v) Frequency Response: 15Hz - 270Hz Hi-Level Input Connection: Yes | Signal-to-Noise Ratio (Sensitivity): 85dB 8 Gauge Power and Ground Input Terminals