The Sonos Arc is a Dolby Atmos soundbar with 11 speakers that can create a 3D soundstage:
Speakers
The Arc has 11 Class-D digital amplifiers, including two dedicated height channels, three silk-dome tweeters, and eight elliptical woofers.
Sound
The Arc can produce 3D sound with Dolby Atmos, and its upward-firing drivers create a multidimensional soundstage. It also has Speech Enhancement in the Sonos app to clarify dialogue.
Voice control
The Arc has a far-field microphone array that uses beamforming and echo cancellation for voice control. You can use the Arc with Amazon Alexa, Google Assistant, or Siri.
Connectivity
The Arc has an HDMI eARC port for connecting to modern TVs, and an optical adapter for older TVs. It also has Ethernet and connection ports.