@anotherbob you inspired me to explore the Tidal vs Qobuz question.
My brief listening notes with a couple of Stan Getz tracks, Girl from Ipanema and Desafinado:
Qobuz: slightly higher volume needs equalizing with Tidal. Sound image seems more stable, fixed. Clear left right and center images. More upper mids and bass resolution but doesn’t seem to go as deep. Tried briefly to use dB app to measure differences but unreliable. There seems to be more air and transparency around the bass, more reverb.
Tidal: image seems denser, more depth and bloom. Not as clear and transparent, more bass bloom and depth. It seems to go deeper but couldn’t validate that. It just sounded quite different from Qobuz. If you like lemon gelati, fresh and open you’ll go for Qobuz, if you like rum and raisin ice cream you’ll be a Tidal fan.
I still can’t make up my mind.