The results were very, very surprising to me. It was generally random across the board, though Spotify fared slightly worse than Apple Music and Tidal overall. In roughly 29 percent of the tests, subjects couldn’t tell any notable difference at all. Tidal — which wants you to pay more for lossless quality — most definitely didn’t take the crown, and in several cases, subjects actually identified it as the worst-sounding of the three.
I wonder if the results would change if the listeners were trained.