Xplore XR-3693 1000Watt 4-Channel Hi Performance Bridgeable Car Power Amplifier Dual crossover slope, Dual input sensitivity control 0.2v~6v` Variable high pass filter 50hz~600hz Bass booster control (0~18db) 1,2,3,input mode Overheat & short circuit protection Low and High impedance input Power & protection led 45 degree acess power & speaker terminals 2 Ohms stable tri-mode capable 1000 watt max