Being a closed headphone, the Stellia is really sounds kinda open, even more than some open designs.
As mentioned in the other thread, I think it is the more reasonably priced closed back focal flagship.
The Utopia got very slight or a tad more resolution and the details are presented more forward (for mid - high frequencies). The soundstage is a bit wider to the left/right, but the Stellia sounds a bit more near my head and around it. Both Utopia/Stellia got the typical dynamic driver bass. I liked the bass and low frequencies of Stellia more, quantitatively and qualitatively. The Utopia is just a bit too bright tuned for me, details sometimes a bit too forward and "unruly" (as someone described).
They both sound simply as very very good headphones, dynamic drivers, when one think about the term "headphone".
Neither of them gave me that immediate feeling of staying in a mid-sized concert hall or spacy room as with the hedd heddphone, or sitting in the second seat with the sennheiser hd 800s. King in those aspect are the stax^^
I do say that besides the stax and heddphone, the Utopia and Stellia were the only headphones were I could hear the "layering" of the sound, the instruments, left or right to each other, or even a bit in front/behind (depth). The same with the imaging.
Both sound characteristics not as good as with the heddphone or even the better stax.
Regarding the MSRP and the overall timbre, the Stellia was more pleasing to me to listen to. "Fun to listen to" (without being fun tuned or a fun frequency response).
I'd buy the Stellia if I would be crazy spending that much money
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