A Home Theater Bonanza of Audio-Video and Satellite Radio Prowess Without sophisticated engineering know-how and design, combining multichannel surround sound with video processing capabilities in A/V receivers presents some formidable challenges, particularly in the mid-level price range.The TX-SR575 balances high-performance audio (for movies and music) with HDMI 1080p pass-thru and component video switching (with upconversion) capability for every video resolution available.With connectivity to both XM® Radio and SIRIUS™ Satellite Radio, the TX-SR575 can give you access to the most varied and exhilarating radio this country has ever seen. Not simply content with giving you multi-dimensional entertainment, the TX-SR575 comes equipped with Audyssey 2EQ™ room-correction technology that enables you to accurately align sound output with the contours of your home. Special Features HDMI Pass Through (2in/1out , 1080P compatible) — A separate audio connection is necessary "Audyssey 2EQ" Auto room calibration w/Microphone XM and Sirius satellite radio ready