With groundbreaking Sound Motion™ technology for a wider soundstage, Arc Ultra brings your entertainment to life like never before. Experience clearer dialogue, deeper bass, and more detailed sound that surrounds you with ultra-precise clarity from every direction – all packed into an incredibly slim design. Dolby Atmos takes immersion to a whole new level, creating a 9.1.4 spatial audio experience. The advanced version of Speech Enhancement gives you more control over dialogue clarity so you never miss a word. Installation is a breeze with the included HDMI cable, and you can control everything with your TV's remote. You can also use the Sonos app, touch control, Sonos Voice Control, and Amazon Alexa. When your TV is off, stream music and more from all your favorite services via Wi-Fi and Bluetooth. Add a Sub and Era 300 rear speakers for the ultimate Dolby Atmos surround sound experience. Listen anywhere in the house by adding Sonos speakers to other rooms.