Yamaha RX-A660BL 7.2 Channel Network AV Receiver, Works with Alexa Works with Alexa for voice control (Alexa device sold separately). 4K Ultra HD video pass-through with HDCP 2.2, HDR and BT.2020 support Dolby Atmos and DTS:X surround sound processing (5.1.2-ch) Built-in Wi-Fi, Bluetooth, AirPlay, Spotify Connect, Pandora, vTuner, PC / NAS MusicCast wireless multi room audio compatible Zone B audio