Lanzar DCT425 4000 Watt 4 Channel Full FET Class AB Amplifier 4 x 1000 W Peak @ 4 Ohms - S/N Ratio (4 ohm ): 90dB - Stereo Separation: 65dB - Nickel-plated RCA connectors &amp; Screw terminals - Dimensions : 9.45''(W) x 2.16''(H) x 13.38''(L) 4 x 750 W RMS @ 2 Ohms - Frequency Response: 15Hz-40KHz - Channels/Class: 4ch. Class A/B - Thermal, Over load &amp; Speaker short protection 2 x 2,000 W Peak @ 4 Ohms Bridged - Variable HPF: 50Hz~500Hz - 2 ohm Stereo Stable - Line In &amp; Line Out Input Sensitivity: 100mV-6V - Variable LPF: 50Hz~500Hz - Tri-mode operation, idgeable - Soft Turn-on/Turn-off THD 4 Ohm Power 0.5% - Bass Boost: 0-18dB (60Hz fixed) - Power &amp; Protection LED Indicators - Fuse Rating: 30Ax2