Oh, now I understand what you are saying. I'm not a huge expert on Master Quality Authentication (MQA) but from what I know there are a few ways it gets implemented. One is hardware which is the best, the other is a software implementation which I've heard is not the ideal. Most MQA files are FLAC files with an MQA layer that is unfolded to give you the sound that is referred to "As the artist intended you to hear their music." The point of MQA is to give you higher quality in a small file size, and there supposedly some copy protection of the file too. You can Google the topic, which you'll find there are big fans and big detractors of the whole MQA universe. A lot of it has to do with the extra licensing fees that MQA imposes on everyone who wants to use it.
Which brings me back to MQA on the iPhone, I highly doubt the iPhone can make MQA happen even at the software level. So I'm not sure what master files you end up listening to through CarPlay. I don't think the iPhone can even handle FLAC or DSD files and most master files, as I understand what a master is, should be a FLAC file or DSD. I think TIDAL is somehow converting the files before sending them over to the phone but that is just a guess.
The point is for all you folks that can afford a Lucid Air and are passionate about music are probably better served by using a Digital Audio Player (DAP). They are purpose built to play music with better digital to audio converter chips (some will employ two of these chips), and all the electronics are of higher quality and have better isolation than what you'll get in a smart phone. I'll report back on a few more test using my Onkyo DAP and my iPhone, but as I said, the last time I tested it there was a noticeable improvement in sound quality using the Onkyo over the iPhone.
For those interested in this subject, the following article from 2016 is still relevant today.
https://www.techradar.com/news/audi...er-in-2016-and-some-reasons-you-don-t-1327123