Channel mode4 - 3 - 2Output Power (RMS) @ 14.4 VDC 4 Ch: 85 W x 4 (4 Ω) 4 Ch: 145 W x 4 (2 Ω) 3 Ch: 85 W x 2 (4 Ω) + 290 W x 1 (4 Ω) 3 Ch: 145 W x 2 (2 Ω) + 290 W x 1 (4 Ω) 2 Ch: 290 W x 2 (4 Ω)Filters Bypass Hi-Pass Lo-Pass Band-Pass
Distortion - THD (100Hz @ 4Ω) 0.02%S/N Ratio (A weighted @ 1V) 100 dBDamping factor (100Hz @ 4Ω) 200Size W x D x H mm (in.) 215 x 190 x 50 (8.46 x 7.48 x 1.97) - See more at: http://www.hertzaudiovideo.com/car-audio-amplifier-hcp4d/#sthash.Af5wEATz.dpuf