The PR-SC5507P is designed specifically for the serious high-definition audio video enthusiast seeking a sophisticated pre-pro to partner with a high-end power amp. You get the very best in video processing, with HQV Reon-VX and 1080p/24 upscaling of all video sources via HDMI™ version 1.3a, plus sophisticated ISF (Imaging Science Foundation) Certified Calibration Controls for fine tuning of video parameters. Along with the latest high-def audio formats from DTS and Dolby, the PR-SC5507P handles Dolby Pro Logic IIz® and Audyssey DSX™-- two expansive surround formats that make use of extra vertical or wide channels in a 9.2-channel configuration. Alternatively, these extra surround channels can be used for playback of different sources in multiple zones. As with Onkyo Professional's latest high-end receivers, the PR-SC5507P offers home networking capability that lets you stream internet radio or PC-based audio through your main system. Ultra-low-jitter PLL circuitry, gold-plated terminals, and XLR inputs and pre-outs are a testament to the units audiophile build quality.