This 7.2-channel 4K Ultra HD network AV receiver features Dolby Atmos® and DTS:X™ object based surround sound. Download the free MusicCast Controller app to access your music library and streaming music services easily. Add audio in up to 9 additional rooms with MusicCast wireless speakers or other MusicCast devices. Wi-Fi®, Bluetooth® and AirPlay® wireless connectivity, advanced speaker configurations and Zone B audio provide added system versatility. In addition, Dolby Vision™ and Hybrid Log-Gamma compatibility provide incredible contrast, smooth tone and rich, bright colors.