Onkyo TX-SR804 7.1 Channel Up-Converting THX Certified A/V Receiver (Black) (Discontinued by Manufacturer) 105 Watts per channel minimum into 8 ohms, at 20 Hz to 20,000Hz x 7 channels Selectable modes for 2 channels stereo and 2.1, 5.1, 6.1 and 7.1 channel surround Vector Linear Shaping Circuitry (VLSC) for all channels Extended frequency response - (5 Hz to 100 kHz) Reduced NFB (Negative Feedback)