Clearly I don't have the breadth of experience of most folks here, but I think it's lovely. Genres like Jazz already sounded amazingly lifelike with the Utopias when driven by the Monolith 788, but my primary genres of Hard Rock and Metal weren't nearly as big a step up from the Clears I had previously (well, I still have them, they just don't get used much anymore.
). I attributed this (rightly or wrongly) to the speed of the Beryllium drivers slightly reducing the sustain, and taking away some of the "size" of the guitars.
That restriction is almost, but not entirely, gone with the Folkvangr, and guitar-driven music sounds much fuller. Unsurprisingly, Jazz sounds even smoother and more liquid. Bass is a little fuller, but not boomy. Low gain is definitely the right setting for Utopias, and I have an
extremely slight preference for having the impedance multiplier enabled. There is very little difference between the two settings, with the mids thinning out just a tiny bit when it is turned off.