max power /rms @ 1ohm 1x4500….1x2000w. Max power/rms @2ohm. 1x2800……1x1400w. Max power/rms @4 ohm 1x1400….1x700. Frequently response 32hz-300hz. The<0.1%. Input level 13.8-14.4v. Lpf crossover control 10-50hz. Bass boost 0-18db(45hz). Phase control 0-180 degrees Dimensions 11.5x9 inches