7.2-channel surround sound with zone BWi-Fi, Bluetooth, airplay, Spotify connect and musiccast multi-room. Works with Alexa.Pandora, Spotify, SiriusXM internet radio, Tidal, Deezer, Napster and moreHDMI 2.1 with HDCP 2.2 (4-in/1-out): 4K Ultra HD, HDR10, Dolby vision, hybrid log-gamma and BT.2020MusicCast surround-capable: add two musiccast 20 speakers to provide wireless Surrounds for a 5.1-Channel setup (coming July 2018)