Got my Roxanne Universals today. I was a little surprised at how dark sounding they are in comparison to my Shure SE846 (w/white "bright" filter). They almost remind of how dark my Westone 4r is, although everything is superior to the Westones, of course. Wondering if it's a fitment issue? I've tried several of the included tips and I found the treble to be a little harsh with the silicone tips. The foam tips aren't bad, but I might need to give these some significant burn-in considering the reports I'm seeing of burn-in affecting the "dark" qualities of this IEM. So far, I much prefer the Shures, TBH, but that's probably more of the sound signature I liked to begin with.
I think I heard the same from another post that Roxanne sounding dark. It's interesting because JH was boasting about how he is pushing for extending treble. What's up with the 4 high drivers? Anyway, did you try turning the bass down and see if it changes this? I get a feeling the Roxanne has a roll off right after 10k like most BA drivers.