Skar Audio MSK-500.1D Monoblock 980W Class D Ultra Compact Subwoofer Amplifier MOSFET Class D Ultra Compact Monoblock Amplifier Peak Power at 1 Ohm : 980 Watts x 1 Channel (14.4v) RMS Power at 1 Ohm : 500 Watts x 1 Channel (14.4v) Low Pass Filter : 35 Hz - 250 Hz | Frequency Response : 15 - 250 Hz Remote Subwoofer Level Control Included