Boss Audio OL5KD 5000W Class D Monoblock Power Amplifier With Remote Subwoofer Level Control Max power @ 1-Ohm: 5000W x 1 Max power @ 2-Ohm: 3500w x 1 Max power @ 4-Ohm: 2250w x 1 Remote subwoofer level control RCA line outputs Gain control Input sensitivity selector Variable subsonic filter Strapping capability: Strap two amps together for twice the power Variable low pass crossovers 0 - +18 dB Bass Boost Power and protection LEDs 0--180 degrees Variable phase shift control Signal-to-noise ratio: > 100 dB THD: 0.01% Dimensions: 11-5/16"W X 2-5/8"H X 17-1/8"L runs arround 500$