Just got this one in today. Audeze LCD-X!
Sorry for the potato; my PC is out of commission and new MacBook is in the mail so I can't edit photos from my DSLR
I've been listening for most of the evening and it's fantastic. I've never heard a headphone that can render such detail but still remain perfectly smooth across the entire spectrum without a hint of sibilance or harshness. Treble is smooth and flat, mids are warm and the bass reaches down seemingly endlessly. Vocals are to die for.
Imaging is sharp and accurate. It always sounds effortless, never muddled, even with complex music like classical. The soundstage has great layering and moderate depth. By comparison, the HD800 has more air between the instruments but everything sounds like it's on the other side of a large room and spread way out.
The HD800 creates a perception of greater micro-detail due to its slightly boosted treble. The LCD-X has a much more natural sound than the HD800. I'm amazed by its ability to retain detail but stay so smooth. LCD-X is a real winner!
If only it was a few ounces lighter...
For reference, my source is Bifrost 4490 into Violectric V200.
I want to upgrade my Bifrost to multibit but I don't want to be without it for weeks while it's away at Schiit! First world problems...