The RX-V663BL 7.1-Channel Digital Home Theater Receiver features full support for HD audio formats, HDMI video upconversion and deinterlacing, iPod and Bluetooth audio compatibility, improved YPAO, Adaptive DRC (Dynamic Range Control), multi-zone custom installation facility, and four SCENE buttons. Four SCENE buttons make operating the receiver easier than ever. Two volume-setting functions are included on this receiver for additional convenience. Initial Volume Setting allows you to set the volume level that will be heard each time the power is turned on. Maximum Volume Setting prevents unexpected loud sounds. You have a choice of eight unique CINEMA DSP surround programs to bring out the full audio potential of your entertainment sources. The RX-V563BL receiver is capable of delivering large amounts of reserve power for accurate reproduction of high-energy peaks that are especially prevalent in digital audio sources. Assignable amplifiers to bi-amp connection 4 SCENE buttons offering greater operating ease with 18 preset SCENE templates XM ready with XM HD Surround powered by Neural Surround SIRIUS Satellite Radio ready Improved YPAO for automatic speaker setup iPod compatibility via optional dock Bluetooth A2DP compatibility with optional YBA-10 Wireless Audio Receiver Superior multi-zone control compatibility 1080p-compatible HDMI (2 inputs, 1 output) Analog video to HDMI digital video upconversion and deinterlacing with TBC Fine-tuned CINEMA DSP and Adaptive DSP level Improved Compressed Music Enhancer Adaptive DRC (Dynamic Range Control) 40-station preset tuning / Auto preset tuning HD Audio LPCM 7.1-channel reception (up to 192kHz) 8-channel or 6-channel external input Speaker A, B, A+B selection Preset remote unit Frequency Response - 10Hz-100kHz Signal to Noise Ratio - 100 dB (250 mV) Dimensions - Width 17-1/9 x Height 6-3/4 x Depth 15-1/2 (435x171x393mm) Weigh