Step up your home entertainment experience with Sony's STR-DH520 receiver that delivers 7.1 powerful channels of sound and allows up to six HD connections.6 Plus, enjoy incredible sound quality while you watch 3D sports movies and games from connected 3D devices.1 Audio Return Channel ensures that you enjoy surround sound even when you watch television delivered straight to your connected HDTV.6The Latest TechnologyWell ConnectedA total of six HD inputs guarantee utmost connectivity and versatility. Four HDMI inputs with 3D pass-through allow you to connect a 3D Blu-ray Disc player, PS3 system, cable box or other device to enjoy 3D movies, video games and TV shows. But wait, there's more: two component HD inputs ensure all your compatible devices can get in on the action.3D Pass-throughEnter a new dimension in home entertainment. Featuring four HDMI inputs with 3D pass-through, you can connect your compatible 3D Blu-ray Disc player, PS3 system, cable box or satellite receiver to enjoy a spectrum of 3D entertainment.1 Don't yet have a 3D-compatible device? No problem; all HD inputs are also compatible with standard 2D devices.