Apple Music Hi Res Losseless OR Dolby Atmos but not both?

[cdweir]

Not sure if I have this right.

I play a track that is available as BOTH Hi Res Losseless and Dolby Atmos. When I play through a DAC and wired headphones it plays at 44k instead of at least 96k when Dolby Atmos is on (under settings>music>Audio>dolby atmos> either automatic or always on).

When I turn OFF Dolby Atmos and restart the track it plays at at least 96k through DAC and wired headphones

Same for iPad or iPhone with latest OS installed

Is this correct behaviour? Can't seem to find it documented anywhere.

This means if I switch between AirPods pro and DAC/wired I have to remember to turn Dolby Atmos on and off respectively for Spatial audio for the APPro.

I expect do to this more once Apple music Classical arrives, but wasn't an issue when Primephonic was alive

Thanks

 

[pup]

You are correct - Apple’s Atmos tracks are not lossless.

You can read through the comments here for more detailed info.