A:Answer The Apple TV 4K with Dolby Digital Plus unlocks its full feature set, including 5.1- and 7.1-channel audio capability (depending on the program).
The prior generation of Apple TV 4K with only Dolby Digital, gets only 5.1-channel surround sound.
On the new Apple TV 4K with the latest version of tvOS, you can listen to music, movies, and TV shows in Dolby Atmos but you still need a way to get surround sound out.
You can use the following setups to play sound in Dolby Atmos or surround sound:
• One or two Apple HomePod speakers*
• A television that supports Dolby Atmos audio
• A Dolby Atmos compatible sound bar with a television that supports Dolby Atmos audio
• A Dolby Atmos-enabled AV receiver
*Apple TV 4K and HomePod speakers automatically play sound in Dolby Atmos or surround sound if it's available with content that you watch.
