Skar Audio SK-3500.1D Monoblock 3500W RMS Class D MOSFET Subwoofer Amplifier Competition Grade Class D MOSFET Subwoofer Amplifier Stable at 1 Ohm Max Power at 1 Ohm: 4,800 Watts (14.4v) RMS Power at 1 Ohm: 3,500 Watts (14.4v) Frequency Response: 15~270 Hz, Sensitivity: 95 dB Remote Subwoofer Level Control Bass Knob and Wire Included