Powerful frequency range, wireless subwoofer, and Dolby/DTS surround sound decoding for an immersive, room-filling home cinema experience. Amazon Alexa enabled with built-in far-field microphones for easy control of playback, pause, volume control, and source selection via speech recognition. Just ask to stream music, control smart home devices, find information, listen to Audible audiobooks, set alarms, and enjoy Amazon Fire TV. Works with 4K and HD TVs, and the built-in dual HDMI 2.0b ports ensure that 4K HDR content looks good.