Legacy LA4670BK 4 Channel 2000 Watt Bridgeable Mosfet Amplifier (Black) 4 x 500 Watts Max Output - Bridged into 4 ohms - Hi/Lo Level MOLEX Input - Fully Protected Circuitry 2 x 2000 Watts Bridged - Dual MOSFET PWM Power Supplies - Power & Protection LEDs - Dimensions: 11.1''W x 2.2''H x 10.5''L Dual Fully Adjustable Electronic Crossover - Variable Gain Control - S/N Ratio: &gt;95dB - Fuse: 20A x 2 Soft Turn On/Off Circuit - Remote Turn On - Frequency Response: 15-30KHz - No Remote Bass Boost Controller 2 Ohm Stereo Stable - Heavy Duty Aluminum Alloy Heat Sink - THD: &lt;0.04%