I wouldn't call myself an audiophile, but my hearing is pretty good and I'm sensitive to quality loss
Funny that you picked these, I have had 5 different people tell me to try them, and I own a pair.
I have some pretty broad musical tastes. If I throw on some modern, electronic music, or anything pop, these do a pretty good job.
The moment I dip into jazz, into anything where the range between the quiet parts and the loud parts (read pre 1990) is large they just dont perform any more. No amount of EQ is going to make up for that missing range.
The best example of this that I can give is Caltrains A Love Supreme. On something good there is a looming undercurrent in the track, the humming is alive. The track is lifeless on every bluetooth headphone I have heard. Hell even my Sonos speakers in the kitchen do a better job.
https://suno.com/song/2bd9142c-c41c-48fc-b28f-157239b50aee
The prompt was “A jazz instrumental that combines the sensibility of ‘A Love Supreme’ with the feeling of the Caltrain transportation system.”
I cant believe I listened to all of that.
Based on the output they need to train the model again, and remove all the mannheim steamroller.
But you can’t really find a decent budget option on bluetooth. I hate mine and only use them for audiobooks. You could find reasonable budget wired earbuds even 15 years ago.