surround sound rear speakers only
I have my Apple TV 4K plugged into my 2023 Samsung 8k tv, and a Bose 900 smart sound bar into the earc port. When using the Apple TV app, I get Dolby atmos and it’s great. When using any 3rd party app (Disney/prime/Netflix) then it plays the main audio track out the rear speakers. I’ve reset Apple TV but no solution
Apple TV 4K (1st generation)