https://techcrunch.com/2021/10/19/amazon-music-unlimited-users-can-now-stream-spatial-audio-on-any-pair-of-headphones/

Amazon announced that starting today, Amazon Music Unlimited subscribers can stream spatial audio with their current headphones on its Android and iOS apps. The company currently supports two forms of spatial audio: Sony’s Reality Audio and Dolby Atmos.

Amazon first introduced spatial audio in 2019, but it was limited to a small number of devices. With this latest expansion, spatial audio will work with any pair of headphones that a user owns.