Settings for Dolby Atmos using a Sonos Arc?

Hi EllisKnox,

Welcome to Apple Support Communities! We appreciate you reaching out for help playing audio from Apple TV in Dolby Atmos over your Sonos speaker. We'd love to help in any way we can.

To confirm, it sounds like your Apple TV is connected to your TV, and then the Sonos speaker is also connected to your TV via HDMI using an HDMI port that is compatible with eARC. Is this correct? It's important to ensure that your Sonos speaker isn't connected to an HDMI port that only supports ARC, as this will not support Dolby Atmos pass-through.

When you mentioned that you are able to play audio in Dolby Atmos from other streaming services, did you mean that you're using services built-into the TV itself? Or are you using another third-party streaming device that passes through the TV to your Sonos speaker?

Have you enabled Dolby Atmos in the Settings of your Apple TV? If not, refer to the instructions in this guide, under the section titled, "Check if Dolby Atmos is set up":

Play audio in Dolby Atmos or surround sound on your Apple TV - Apple Support

We're here for you if you've got any questions.

Have a great day!

Hi EllisKnox,

Thanks for letting us know that you're not seeing this option. In that case, verify that your Apple TV is fully updated. The following guide explains how to update:

How to update your Apple TV - Apple Support

Also, ensure that Quick Start is turned on in Settings. To check, go to Settings > Apps > iTunes Movies and TV Shows > Quick Start.

If you're still not seeing the option for Dolby Atmos, will it be possible to test using a different HDMI cable that has explicit support for Dolby Atmos?

If it's still not working at that point, please verify your model of Apple TV using the information in this guide:

Identify your Apple TV model - Apple Support

Take care.

Hi EllisKnox,

Thanks so much for checking. Since you also verified that your Sonos soundbar is connected to a port that supports eARC (and not simply ARC), you'll want to reach out to Apple Support directly at this point to investigate further.

Here's a link to contact Apple Support:

Get Support

Have a good day!