9-channel amplifier 125 watts per channel into 8 ohms (20-20,000 Hz) at 0.08% THD, with 2 channels driven Dolby® and DTS® surround sound decoding, including Dolby Pro Logic® IIz and DTS Neo:X analog-to-HDMI video upconversion (up to 1080p and 4K) Audyssey Laboratories' MultEQ® XT32 and Sub EQ HT eight-point auto setup and room calibration system (microphone included) Audyssey LFC (low frequency containment) system limits the amount of bass that leaks into other rooms Audyssey DSX® processing for enhanced surround sound height or width effects using additional front speakers Audyssey Dynamic Volume mode to keep listening levels steady Audyssey Dynamic EQ for fuller sound at lower listening levels Digital and Streaming Music Options: Internet-ready for listening to music from a networked PC, free Internet radio, and music services includes support for Spotify, Pandora, and SiriusXM (subscription required for some services) Apple AirPlay for streaming music from an iPhone, iPad, iPod touch® or computer running iTunes plays high-resolution digital music files via USB storage device or a networked computer (up to 24-bit/192kHz resolution) DLNA and Windows® 8 compatible for streaming music with compatible devices and computers front-panel USB input gives you a direct digital connection for your iPod for improved sound quality add Bluetooth streaming capability with the Marantz wireless audio adapter Multi-room Audio: three-room/three-source output HDMI dual-zone switching for watching HD content from different sources on two HDTVs simultaneously powered and line-level stereo audio output for 2nd and 3rd rooms (using powered 2nd- and 3rd room outputs allows 5.2 home theater in main room) power amp assign function lets you use surround back, front height, and front wide speaker outputs for Zones 2 and 3, Front B speakers, or bi-amping compatible front speakers supports 2nd and 3rd zone output from digital sources Audio Performance Features: 24-bit/192kHz...