Sound Storm Labs EV4.2800 Car Audio 2800W 4 Channel MOSFET Amplifier w/ High / Low Crossover & Remote Subwoofer Level Control (SSL) 　 SKU: SSL12-EV4.2800 Tri-mode operation Bridgeable 2 Ohm Stereo Stable Variable low pass crossover: 40-150Hz Fixed high pass crossover (200Hz) Variable 0 to +18dB Bass Boost Variable input gain control Power and protection LED indicators Thermal, overload and speaker short protection Line and speaker level inputs Chrome plated RCA connectors and terminals Remote subwoofer level control Frequency response: 9Hz Max power 2 ohm 700W X 4 RMS power 4 ohm 300W X 4 Bridged power 4 ohm 1400W X 2 Signal-to-noise ratio 105dB THD at RMS output 0.01% Damping factor 125+ Dimensions (22" L x 10" W x 2-1/4" H)