So my previous headphone experience is using a set of Pioneer SE-MHR5s for casual listening, and an old set of Sennheiser HD 380 Pros for Mixing. I was very excited to get a new pair of headphones for mixing music, as well as practical use such as voice calls and games.
Sound: This is why I ended up returning the headphones, the high end just sounded harsher than anything I'd experienced before, giving me ear fatigue after only a few minutes of listening. After applying some neutralising EQ I found music more listenable, and almost decided to keep them, but Discord Calls and Games I ended up finding equally unenjoyable, to the point of switching back to my old headphones for those activities. I want to point out that there is a great deal of clarity with these headphones, everything is nicely separated and generally I can tell that the sound quality is very good, but these headphones actively pained me to use so I can't excuse them.
Comfort: I really can't knock the comfort, I'm almost sad to see them go, they're incredibly comfortable and I wore them for a whole day with no ear irritation.
Quality: Solidly built, however they're a little inflexibile which is irritating, great for removable parts though, should become an industry standard practice!
Side Note: As these are quite new headphones, you will have a hard time finding good profiles for EqualizerAPO or Peace EQ, they haven't been made yet it seems.
Overall: Honestly I'm disappointed I have to send these back, they're very comfortable and good quality, but the harshness of the high end and the general heavy-handedness of the bass left me feeling fatigued and depressed about even listening to music, maybe you'll have a better time with them if you're used to high end sound but both of my previous headphones were more bass-oriented and the transition was too much! I'm thinking about making my next pair a set of Audio-Technica M50Xs, as I've heard the bass on those is great and the highs are more muted, which suits me just fine.