I have Amazon video, Netflix, etc. on my Roku ultra and have no problems decoding Dolby Atmos. I signed up for Amazon music unlimited because it offers Atmos tracks but my Amazon Unlimited Roku ultra is only playing back stereo when I play tracks indicated as Dolby Atmos. Is this an indication of Amazon Music on Roku Ultra only? Has anyone else been successful playing Dolby Atmos tracks from Amazon music unlimited through their Roku ultra? Thx
Sorry to be the bearer of bad news but it won't work. You can only get ATMOS for Amazon Unlimited music using the ios or Android app. It won't work on PC, or on ROKU, or Chromecast with Google TV. If you want ATMOS you pretty much have to get an Apple TV 4k. I hate Apple but that's it.
I stopped using ROKU awhile ago and it was primarily due to a lack of ATMOS support. I'm not sure I'm ready to support Apple. I sure with Spotify or Amazon would get their act together. I refuse to use Tidal either because it's even twice as expensive as Apple.
My Apple TV 4K doesn't play any of the HD formats from Amazon Music. It does decode Atmos for movies and streaming series on Netflix and such. My Firestick 4k does show the labels, but overall it's still a fairly **bleep** sound..
Some Amazon Fire devices support Atmos on Amazon Music Unlimited, including Cube 3rd Generation and Firestick 4K Max. I bought the Firestick for just that reason. I prefer Amazon Music because I can get hi-res playback over HEOS on a Denon AVR, which is not the case with Apple or Tidal. I wish HEOS supported Atmos, too, but no luck there.
I don't know about Ultra, but for what it's worth, I have a Streambar Pro and I connect my Samsung phone (Gal A13, Android 13) via bluetooth and play Amazon Music through that. It works really well for me. I get HD, UHD, Atmos, Sony360. I'm an old man and my silver-eared days are behind me, so your mileage may vary. There's probably some virtualization going on, but sounds good to me. I'm retired, so I get few calls and I turned off notification sounds and just check them manually. Might be worth a shot.