Audiopipe, 1800 Watts Class D Mosfet AmplifierSpecifications: RMS @ 1 Ohm (<1% distortion): 1722W RMS @ 2 Ohm (<1% distortion): 1104W RMS @ 4 Ohm (<1% distortion): 650W Input Level: 0. 2 ~ 5V Frequency Response: 30Hz ~ 180kHz LPF: 40Hz ~ 180kHz THD: 0. 5% Subsonic Filter: 0Hz ~ 50Hz Bass Bost Level: 0 ~ 12dB Signal to Noise Ratio: >80dB Overheat Protect Temperature: 80C 176F Current Draw: 168A Minimum Load: 1 Ohm PCB: Double Side Board Dimensions (W x H x D): 9 x 2. 5 x 15. 75. (232x53x399. 5mm)