Enrock EKM008A 4-Channel 800 Watt Waterproof Marine Boat Power Amplifier (Silver) 4 X 100 Watts RMS at 4 Ohms - 4 x 200 Watts Max at 4 Ohms Electronic Crossover Network 2 Ohms Stereo Stable Anti-Thump Turn-On Soft Turn On/Off Adjustable High Low Level Inputs RCA Line Input Power Protection Circuitry Volume Gain Remote Control T.H.D: 0.05% S/N Ratio: 95dB Channel Separation: 65dB Frequency Response: 10Hz-40kHz Fuse: 10A Dimensions: 6.10"L x 3.35"W x 1.38"H - Accessories: iPod/MP3 Waterproof 3.5mm Stereo to RCA Adaptor Remote Control for Volume Gain