Channel mode 2 - 1 Output Power (RMS) @ 14.4 VDC 2 Ch: 120 W x 2 (4Ω) 2 Ch: 200 W x 2 (2Ω) 1 Ch: 400 W x 1 (4Ω) Filters Bypass Hi-Pass Lo-Pass Band-Pass Subsonic - 50 ÷ 3200 Hz @ 12 dB/Oct. 50 ÷ 3200 Hz @ 12 dB/Oct. - - Distortion - THD (100Hz @ 4Ω) 0,03 % S/N Ratio (A weighted @ 1V) 105 dB Damping factor (100Hz @ 4Ω) 300 Size W x D x H mm (in.) 315 x 190 x 50 (12.40 x 7.48 x 1.97) - See more at: http://www.hertzaudiovideo.com/car-audio-amplifier-hcp2x/#sthash.f3OEkaU8.dpuf