Power and Processing: 7-channel amplifier 100 watts per channel into 8 ohms (20-20,000 Hz) at .08% THD, with 2 channels driven Dolby® and DTS® surround sound decoding Dolby Atmos® processing for use with in-ceiling or "height" speakers for more enveloping surround sound DTS:X™ for an immersive, 3-dimensional soundstage (available via Summer 2016 firmware update) Advanced AccuEQ automatic speaker calibration optimizes your system's sound for your room (microphone included) Digital and Streaming Music Options: built-in Wi-Fi for listening to music from a networked PC, free Internet radio, and music services includes support for Pandora, Spotify, SiriusXM, Slacker®, TuneIn, and Aupeo! (subscription required for some services) built-in Bluetooth for wireless music streaming from a compatible smartphone, tablet, or computer Apple AirPlay for streaming music from an iPhone®, iPad®, iPod touch®, or computer running iTunes DLNA-certified for streaming music with compatible devices and computers plays high-resolution digital music files via USB storage device or a networked computer (up to 24-bit/192kHz resolution) plays DSD files (up to 5.6 MHz .dsf files) from network and USB storage devices Multi-room Audio: dual-room/dual-source output powered stereo audio output for 2nd room using powered 2nd-room output allows 5.1 home theater in main room line-level 2nd-room output for use with a separate amplifier or powered speakers Audio Performance Features: high-current amplifier design with large power transformer 32-bit/384kHz Asahi Kasei AK4458 digital-to-analog converter for clear sound from digital sources Music Optimizer function enhances the sound quality of compressed music files and Bluetooth streams bi-amp capability with compatible front speakers by reassigning "surround back" channels Connections: HDMI 2.0a audio/video switching: 8 in, 2 out (includes front-panel input) HDCP 2.2 technology ensures compatibility with 4K Ultra HD sources and TVs (HDMI inputs 1, 2, 3,...