What is 3D Audio?
3D audio is an immersive audio format included in Amazon Music HD for playback on Echo Studio devices.
3D audio turns stereo songs into a multidimensional audio experience, adding space, clarity, and depth.
Amazon Music HD has a growing catalog of 3D music that supports over a thousand tracks mastered in Dolby Atmos and Sony's 360 Reality Audio codecs from some of the world's biggest artists.
In addition to 3D audio, Amazon Music HD customers can play back HD and Ultra HD on Echo Studio devices.
For more help, try our Amazon Music forum