I was at the Schiit show.
But I'm way too noob to really tell the difference between amps/DAC's, so I can't really give you much of an impression, sorry. I mostly went to check out the usual high-end headphones that most people would suspect would be there - HD800, Audeze's, etc.
I will say the Ether C that debuted there was pretty amazing, though. It did get a little weird at times with the treble, but otherwise, a fantastic headphone. I would still put the HD800 and the LCD3 above it, but the Ether C nonetheless is fantastic.
As far as the Fidelio X2 goes... what's the sound signature like, on those? Are they cold or warm? Because I personally prefer colder signatures (which is why I loved the K702 so much). And have you guys done direct comparisons between the Fidelio X2 and the K701/2?