professional 8 channels powered mixer console

professional 8 channnles powered mixer console NK800-USB Function Feacture 7 mono input channels, 1 stereo input channel USB port available, Built-in amplifier Two-bus main channel output,one AUX output and backtrack 3-band EQ for each input channel Built-in 16 DSP Effects Double 7-band main control EQ 2 bus electronic balanced display Overall System Totai Harmonic Distortion:≤0.1% Frequency Response:20Hz-20KHz S/N Ratio: ≥-80dB Max Outputs:4V Max Input Sensitivity:Mic-60dB :Line-40dB :Efret-40dB :Aux in-40dB :Tapein-40dB Parametric EQ:HI±15dB/10KHz :MID±15Db250Hz-6KHz :LOW±15Db/60Hz Power Amp Section:2×400W(4Ω) 2×550W(4Ω)