Yamaha RXV1700 7.1-channel Digital Home Theater Receiver (Discontinued by Manufacturer) 7-channel powerful surround sound - 910W=130W x 7 RMS; 1,225W=175W x 7 Max Digital ToP-ART with extremely high quality parts and devices used throughout - Yamaha's Digital ToP-ART concept combines the latest and best technologies, parts and circuit designs to maximize sound quality. A new interior layout completely isolates the digital, analog and video sections and provides the shortest possible signal routes for sound quality and efficiency Pure Direct for higher fidelity sound reproduction 2 in/1 out HDMI (Ver 1.2a) for handling digital signals including Super Audio CD Assignable amplifiers for bi-amp connection