With HQV Reon-VX video processing, dual high-def HDMI outputs, Audyssey room correction technologies, and multi-room audio and video distribution, the TX-NR906 leaves no base uncovered. Built around an isolated power block and pre-processing unit, this network receiver reveals the full potential of virtually any media. This includes any Internet or computer-based sources accessed via its network apparatus, which incorporates a vTuner interface and Certified for Windows Vista status. The network capability of the TX-NR906 gives you access to Internet radio and digital music files including AAC, WMA, MP3, WAV, OGG, and FLAC, via an Ethernet network between the TX-NR906 and your computer. It also enables you to access music files from a USB mass storage device or a portable audio player, through a USB port. It's also equipped with CD-quality HD Radio, Satellite and Internet Radio, and XM HD Surround sound capability. Parallel Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry Massive Toroidal Transformer and Two Separate Transformers for Audio and Video Processing Burr-Brown 192 kHz/24-Bit Audio DACs (PCM1796) for All Channels Three TI (Aureus) 32-Bit DSP Chips for Advanced Processing Bi-Amping and BTL (Bridged Transless) Capability for Music and Movie Sound Effects Audyssey MultEQ XT to Correct Room Acoustic Problems and to Calibrate Speakers Audyssey Dynamic EQ for Loudness Correction Audyssey Dynamic Volume for Optimal Listening Level and Dynamic Range VLSC (Vector Linear Shaping Circuitry) for All Channels Powered Zone 2 (Audio and Video); Zone 2 and Zone 3 Pre Outs; Independent Control for Volume, Balance (Zone 2 and Zone 3) and Bass/Treble (Zone 2 Only) XM Satellite Radio and SIRIUS Satellite Radio Connectivity Dimensions - Width 17-1/8 x Height 7-5/8 x Depth 18-1/16 (435x194x458.5mm) Weight - 54 pounds (24.5 kg)