Please, at risk of offending the Utopia community, I'd like to share thoughts as a potential buyer. Hopefully you will see that I mean no offence.
I recently read an older Hifi News of Hifi Plus review of the Utopia. (It was in their magazine and not an online review.) They said quite clear that they considered the Utopia balanced in terms of bass and treble. They practically gushed about how balanced it was.
The issue I am thinking about, is that the Utopia often gets criticism of brightness levelled at it. While some reviewers say that's not the case.
Notably Innerfidelity did an after review article about this. Just searching Focal Utopia Measurements, brings the link up first.
https://www.innerfidelity.com/content/seven-focal-utopias-measured
He suggests that the Utopia he got for review was vaguely possibly aimed at his known warmer tastes.
Given I have thought of going to audition the Utopia, the idea of warmer audition models, is not in my mind. I have to say at this point, that my sources are Chord DACs, which are flat-line neutral. I can not possibly introduce brightness from my source. I have the Mojo, Hugo 2, and TT2.
Secondly I read about a cable upgrade for the Utopia, and mentioned it before. This thread was very enthusiastic in mentioning other cables and the love users had for them. (That was cool.) I would not be averse to buying the cable I read about. This one.
https://www.hifiplus.com/articles/moon-audio-black-dragon-premium-v2-headphone-cable/
I am particularly fond of this review, because he discussed perceived bass lightness. Meanwhile not actually saying the Utopia is bass light. This is interesting because it makes me think about the Utopia detail level. In my limited experience, more detail can sound trebly, even when it is not. I wonder if this is actually what is going on with the Utopia. (My solution would be to audition Utopia with my self-chosen bass tracks from my music.)
It leads me onto another aspect though. Some graphs show Utopia with high peeks in the treble, a 10dB over the bass response. That would be bright to me. Some other measurements the Utopia with no treble peaks. Of course it depends on measuring equipment. Sound-wise brightness would be also dependant on source kit.
I am not really asking a question. I am thrashing out my thoughts, knowing that folk will know how to reply.