Pretty good combo, yes. This is the 2nd time I've bought this DAC and it's still a best under $5K and probably under $10K as well. But it requires a ton of burn-in to fully mature. The Voltikus is a must have option. The only thing it would improve on the built in OCX clock would be a 10M master clock, but I'll make do without that. The form factor is just a non-starter as it is designed to be rack-mounted in a recording studio environment.
As an analog-sounding DAC--especially when fully burnt in--it pairs up nicely with the Dark Star. Micro-details are preserved, but still has a very natural sound signature and punch especially with the HE-500Rs. The T70 Hybrid is still a bit bright on the top end but the Gold will undergo severe refinement during the first 1,000 hours. The synergy with Amarra 2.3 is just perfect, one of the ways to tell how good a DAC is to actually differentiate between the sound of iTunes and the Amarra Sonic engine.
The new software Control Panel app is also a nice touch. You can pretty much control all aspects of its operation straight from the screen, including firmware upgrade and advanced options (see partial screenshot below).