At some point, I read about differences about the source these high-resolution websites get their music from. I forgot the details but there was lots of discrepancy among them, at least at that point in time. Sort of "rip the CD into (let's say) DSD". I have no further knowledge about that, just a faded memory of an article.
For now, and for a quick info about other websites, this has a few mentioned...
https://www.sony.com/electronics/best-music-download-sites-hi-res-audio
For now, and for a quick info about other websites, this has a few mentioned...
https://www.sony.com/electronics/best-music-download-sites-hi-res-audio