Amplifier Class  >  Class AB No. of Channels  >  4/3/2 Max.power output  >  80 W x 4 (4Ω) 130 W x 4 (2Ω) 260 W x 2 (4Ω Bridged) RMS power output  >  40W x 4 (4Ω) 65 W x 4 (2Ω) 130 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  >  94 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 Dimensions  >  326 mm x 60 mm x 215 mm