Ok, these HD800s are pretty damn good. Fuck all this "Unimpressive out of the box" "needs burn in" "the dingo ate my baby" nonsense.
I've been listening to them for 15 minutes: imac-->ECD-1/ns m192 mk2-->Pimeta(!)-->HD800 and I can say without hesitation that I have never heard a dynamic can like this. Unbelievable speed and snap; transparency and unbelievable extension. They disappear. I'm sorry, but these sound more like a pair of 'stats than any other dynamic I've ever heard. Damn good 'stats. But I can also hear the 650 in its bones, just taken to the next level (or several).
I'm going to stop waxing rhapsodic for a bit and let the infatuation settle down. But for now, this is exactly what I was hoping to hear.
Probably it's just that my Pimeta is THAT GOOD.