Performance: Output Power............................. 230W into 8ohm speakers, 400W into 4 ohm speakers Frequency Responce................ 4Hz to 56kHz at -3dB points Input Sensitivity....................... 1.2V RMS (for 230W into 8ohm speakers) Harmonic Distortion................ <.07% from 20Hz to 10kHz, typically <.005% Signal To Noise Ratio............. -122dB unweighted (20Hz to 20kHz) -126dB A-weighted Damping Factor....................... >200 (for 8ohm loads) Stability.................................... unconditional