Amplifier Class  >  Class AB No. of Channels  >  4/3/2 Max.power output  >  170 W x 4 (4Ω) 250 W x 4 (2Ω) 500 W x 2 (4Ω Bridged) RMS power output  >  60 W x 4 (4Ω) 95 W x 4 (2Ω) 190 W x 2 (4Ω Bridged) Frequency Response  >  10 Hz to 70 kHz Impedance  >  2Ω to 8Ω Total Harmonic Distortion(THD)  >  <0.05% S/N Ratio  >  >95 dB Speaker Level Input  >  Yes Automatic Signal Sensing and Turn-On  >  Yes Crossover Type  >  Variable HPF/LPF (A-Ch) HPF/LPF (B-Ch) Crossover Frequency  >  A-Ch: HPF: 40 Hz to 500 Hz LPF: 80 Hz B-Ch: HPF/LPF: 80 Hz Bass Boost Frequency  >  50 Hz Baas Boost Level  >  0/6/12 dB Dimensions  >  356 mm x 60 mm x 215 mm   CLICK HERE TO VIEW PDF  >  AMP_GM-A6704