Offering the Apple TV + streaming service and iTunes movies, the Apple TV app on Fire TV devices has recently been updated to support Dolby Atmos compatibility.
Apple TV on Fire TV now HDR Dolby Vision / Dolby Atmos compatible
As a reminder, Apple TV had arrived in 2019 on Fire TV, with several limitations, the HDR Dolby Vision having arrived later via update. The immersive Dolby Atmos audio format is notably available on most Apple TV + films and series such as Finch, Foundation or For All Mankind. Note that more than 500 movies on iTunes are also compatible with this format.