Our Products         Line Array       Active Speaker Cabinet       Studio Monitor       Speaker Cabinet       EQ & Amplifier   EQ AB series AC series   Portable Speaker       Guitar/Bass Amplifier       Mixer       Popstar       VA serise       Ultra Portable Speaker         AMPLIFIER>>>AB series               AB 1200/1800/3000       AB professional amplifier specification AB AB3000 AB1800 AB1200 Output Power 8ohm 450W(RMS)x2 310W(RMS)x2 220W(RMS)x2 Output Power 4ohm 840W(RMS)x2 570W(RMS)x2 440W(RMS)x2 Output Power 2ohm 1500W(RMS)x2 830W(RMS)x2 760W(RMS)x2 Bridged 8ohm 1800W(RMS) 1150W(RMS) 760W(RMS) Bridged 4ohm 3000W(RMS) 1750W(RMS) 1150W(RMS) S/N Ratio >100dB >100dB >100dB Freq Range 20Hz-60KHz( ±1dB) 20Hz-60KHz( ±1dB) 20Hz-60KHz( ±1dB) Input sensitivity 1.228V 1.228V 1.228V Damping factor 8ohm 1KHz >200 >200 >200 Slew Rate >28v/us >28v/us >28v/us THD(1kHz/50W) <0.075% <0.075% <0.075% AC voltage selection 110V~120V/60Hz 110V~120V/60Hz 110V~120V/60Hz 220V~240V/50Hz 220V~240V/50Hz 220V~240V/50Hz Dimensions(WxDxH) 540x540x160mm 540x540x160mm 540x540x160mm Weight 32Kg 24Kg 22Kg