Things I found on my Sony TV with ARC and what will play Atmos, might apply to your TV too
My main source is Apple TV 4K and I can't get any ATMOS for it to my 55 inch Sony X930E. Bummer since thats my main source for all content. Using the built in TV apps, which I normally never use, I can get ATMOS from Amazon Prime and Vudu Jack Ryan sounds great in ATMOS with ARC, Sonos sub, and One SL rears. My understanding is the Fire TV has more apps that do ATMOS with the ARC like Netflix, Disney Plus, and Amazon Prime. I don't really want to use Fire TV though. Even though my TV is only a few years old I am thinking about getting a new one that does eARC. Newer ones also do Airplay 2, Siri, and iTunes which I also want to maybe it's worth it to upgrade the TV. Anyone know what format Amazon Prime uses for ATMOS? Apparently my TV can't deal with iTunes ATMOS which uses MAT and would been to be converted by the TV to do DD+ to play on the ARC. iTunes movies have great quality all the way around with a lot of ATMOS titles so I'd really prefer to use that or iTunes built into a TV.
