Audio Performance & PowerPower Output (Stereo): Approximately 65 to 68 watts per channel into 8Ω.Surround Output:Front: 65-68W.Center: 50-68W.Rear: 25-27W.Frequency Response: 20Hz to 20kHz.Total Harmonic Distortion (THD): 0.09%.Signal to Noise Ratio: 72dB (MM/Phono), 91dB (line).