Lanzar HTG447 2,000-Watt 4-Channel Mosfet Amplifier 4 x 250W RMS @ 4 OHMS - Bass Boost Circuit - Low Pass Filter Controls - S/N Ratio: &gt;90dB - Subwoofer Remote Level Control 4 x 500W Max @ 4 OHMS - Bridgeable at 4 Ohms - High Pass Filter Controls - Channel Separation: &gt;65dB - Fuse: 20A x 2 2 x 1000W Max @ 4 OHMS Bridged - 2 Ohm Stereo Stable - Power and Protection LED Indicators - Freq. Response: 10Hz-45KHz - Dimensions: 14.96''(L) x 2.24''(H) x 8.81''(W) 4 x 350W RMS @ 2 OHMS - Gold RCA Inputs - Soft Turn-on/Turn-off - HPF Freq. Response: 80KHz Electronic Crossover Network - Line Outs for Left and Right Channel - THD: &lt;0.01%. - LPF Freq. Response: 50Hz-250Hz