Specification of double channel : Model XLi800 XLi1500 XLi2500 XLi3000 XLi3500 XLi3600 Channel 2 2 2 2 2 2 Output power stereo mode 8 Ohms 250Wx2 400Wx2 600Wx2 800Wx2 1000Wx2 1200Wx2 Output power stereo mode 4 Ohms 500Wx2 700Wx2 1000Wx2 1400Wx2 1800Wx2 2000Wx2 Input sensitivity 0.775V rms Frenquency response 20-20000Hz(¨¤0.1dB) Slew rate 10V/us Damping factor 200:1 (10Hz-400Hz) Cross talk 70dB@1KHz S/N 100dB THD+N 0.5%,20-20K Hz IMD 0.35% Dimensions (WxHxD) 483x88x320mm 483x88x370mm Specification of four channel : Dolsi Audio developed specially 4 channel of XLi series, which gives more choice to our clients. Model No. Xli4600 XLi4800 Channel number 4CH 4CH Output power stereo mode 8 Ohms 4x600W 4x800W Output power stereo mode4 Ohms 4x1000W 4x1400W Input sensitivity 0.775V rms Frenquency response 20-20000Hz(¨¤0.1dB) Slew rate 10V/us Damping factor 200:1 (10Hz-400Hz) Cross talk 70dB@1KHz S/N 100dB THD+N 0.5%,20-20K Hz IMD 0.35% Dimensions (WxHxD) 483x88x450mm 1pc per carton