Stereo Power 4 ohms: 2x 200Wrms. Stereo Power 8 ohms: 2x 135Wrms. Power bridge 8 ohms. Parallel Power 2 ohms. Freq. Resp. (+/- 1.5 dB): 10 – 50000Hz. Input sensitivity: 0.77V. Input impedance: 20 kOhm. S / R ratio:> 85dB. Damping factor:> 150. Response speed: 35V / uS