My package arrived in Australia on the 9th, and was delivered today (13th).
I only purchased the headphones, not the DAC.
Quick impressions: The cable is a little short for desktop/home use, if your amp/source isn't fairly close the included extension cable will probably be required.
The ear-cups are very much on the small side, at first I thought they were so small they would effectively be on-ear rather than over-ear. With a little wriggling they did just fit around my ears, but the pads are probably in contact with my earlobes much of the way around.
They're lightweight. Build quality is a little flimsy and plasticy in comparison to my larger (and more expensive) full size phones, but that was to be expected.
Did some quick A/B testing against some more expensive phones (AKG 553, 712, DT880) and they held up reasonably well (bear in mind my current source is just on board mb audio line out to an old stereo amp). They do sometimes sound a little muffled by comparison to the more expensive phones, but the one difference that really stood out was the bass. It was noticeably emphasized on the Aurvana compared to the other phones and I found it overly boomy.
Some of that bass boom may have been caused by the way my ears were stuffed into the small earcups though, it would be interesting to try a larger set of earpads on them.