OP - you may have missed all the rage about Tidal moving to FLAC. Started (beta) with iOS last month, then this month started with Android, today I just checked, Windows Desktop app also updated to FLAC. However - not all titles have been replaced, you will still see MQA for songs that are not yet replaced with FLAC version. Oddly, I have seen posts of people complaining about this. Humans are very puzzling. There are also untested theories that Tidal is converting MQA back to FLAC - nobody has provided any proof of this or shown how they arrived at this. I am enjoying this change very much. But I notice that it is a big job, they have not done BluOS just yet, they have not done the app embedded in MusiCast (I am using Yamaha) and UAPP is still stuck in MQA. But this is very early stages of the rollout.