Thanks! As I've mentioned though, I'm not going to do a big write-up on the D2 like I did with the original. It's just going to be some observations about the similarities and differences of the two models. I've just got way to much on my plate at the moment - new baby due in 2-3 weeks, buying a new van (yep, I'm going to be a van person now.... weird), articles for InnerFidelity, work, and a bunch of other stuff too.
So far I can say that the D2 does seem improved over the D1 in terms of DAC performance. It's not a huge difference - indeed, I don't know if that sort of improvement is possible at any price. But I'm hearing minor things that remind me of the difference between the D1 and the Resonessence Labs Invicta. I need to spend some time listening through a speaker rig to learn more.
I just got the new HiFiMAN HE-400 in, which should be a good test for the amp section. It's about on par with the LCD-2 in terms of being easy enough to drive to acceptable levels but harder to actually drive right, where it reaches peak performance. Right off the bat the D2 seems really great straight from the headphone out.