I agree with this in essence, but rather than call it a problem, I'd phrase it a bit differently: I'd say that unless you own really high end source gear, you're not going to be taking advantage of everything the Utopia has to offer. It hardly seems worth spending $4k on a headphone that won't be used to its full potential. If you already have a really nice headphone like the HD800, but your source chain isn't quite TOTL yet, you might consider upping your source chain first otherwise you might be disappointed that the Utopia isn't sounding as good as people say it should.
Yup, I can't disagree with this. They were just as obviously capable out of a balanced portable amp from Cypher Labs or ALO Audio.
I guess I would have to disagree with Currawong about the Utopia's requiring someone to already have a super high-end rig to even be considered.
For me, since I'm so over-sensitised to small differences in sound. I was listening in the Cavalli/AK/Kimber room and my first thought was "I want to use a different source that I like better." because I could tell instantly (at least I believe -- anyone else is welcome to think I'm nuts) what aspects of the sound were the amp and what were the AK streamer through the Utopias.
There are obviously people out there who want to drop $4k on the Utopias and I think they are mostly people who will drop an equal amount on the other gear too. Best results will be, IMO, if those people indeed do that.
@meomap Decisiveness is good.