So under the new Sonos app I have noticed something and was wondering if any one knows the answer to the following question please?

i have a full atmos setup with the Arc, Woofer and Sonos One speakers  

I also have two Era 100 in another room working as a stereo pair  

i use Apple Music as my main music source  

when I play music through Arc I get Dolby atmos which is indicated on the app  I also get a lossless indicator if the music track is lossless and not atmos  

if I play music through my Era 100’s I never get lossless indicator even when playing the same track?

surely the Era100 speakers are capable of steaming lossless audio??

 Looking at the technical specs they should be capable???

anyone know why??  
 

thanks

 G