

this is why when playing Atmos content from native apps in the TV set, the Sonos App will show “Dolby Atmos”

any TV set with ARC, using its own native streaming apps, will properly pass on internal ADD+ via its ARC port to the Sonos this is why you see on the Sonos App, that the soundbar is playing DD 5.1 when playing Atmos content from the ATV because the ATV will not output Atmos DD plus (ADD+), if you have an ARC (not eARC) TV set, the ATV drops the best output option down to PCM stereo. yes you read that correctly - the ATV which internally apparently uses ADD+, only supports ADDTHD output, it is not capable of outputting ADD+ ! (See Apple Support link at the bottom of my post) ironically the ATV, despite what it handles internally, will output only DD Atmos True HD (ADDTHD) which requires at least a TV with an eARC HDMI, to pass TRUE HD content to the Sonos If you have an ARC TV set, the fault is a truly bizzare twist in ATV Atmos output restrictions

I just went through this, with lots of tech support and research. the OP’s original question, asking about Atmos compatibility with a Sonos Arc sound bar. This way, you can give your Apple TV voice commands to open apps quickly.The statements made in this answer may be true, but they are misleading w.r.t. If you push the button on the side of the Remote, you activate the voice assistant Siri. The new Siri Remote has a light, aluminum design and a touch clickpad, so you can easily scroll through the menus. This model is the second generation Apple TV. Want to play content from your iPhone or iPad on your TV? Thanks to AirPlay, you can easily stream from your device to the Apple TV. The tvOS operating system gives you access to well-known streaming apps like Netflix and Apple TV+. The Apple TV 4K has the powerful A12 Bionic chip processor, which allows it to display video content and games smoothly.

As a result, your TV will show the high-quality HDR images the way the Apple TV intends, as long as your TV supports 10-bit HDR. With the Color Balance function, you calibrate your TV via your Apple iPhone with true-to-nature colors. HDR and Dolby Vision ensure a wide color gamut, so the images look realistic. Thanks to the 4K resolution, you can see every detail of your favorite movie or series. With the Apple TV 4K (2021) 64GB, you can enjoy your favorite content with a high image quality.
