Peter,
I hope I'm not off topic here, but I found an easier way to listen to TIDAL MQA tracks via my Lumin S1 where no TIDAL desktop app is involved.
Just use the Lumin iPad app and search TIDAL by artist as you normally would. All the MQA albums appear on the search results along with the Redbook version. There's no way to tell the MQA vs. Redbook version from TIDAL's album art so you just have to play each to see which plays at 48kHz, 24-bit.
The SQ is noticeably better than the Redbook version, likely due to the 24-bit depth. I imagine if I used the TIDAL desktop app, the tracks would unfold to 96kHz, but I'm not sure how to play music from my Mac Mini to my S1.
That is true, but you are still only getting step 1 in the 3 step MQA process.
Step 1 is 48/24
Step 2 is 96/24
Step 3 is full blown MQA with the algorithms applied.