That's why I posted what I did. Lots of moaning about what almost always turns out to be build errors. I wanted to proclaim my build was a success (ok, so I had to reflow a few joints) and proclaim my complete satisfaction with my Crack experience. And that I can view the Crack as a starting point (helps if you've got experience with soldering) is pure joy.
Crack/Speedball, SEX 2.1/C4S, Bryston BHA-1
Sennheiser HD600/Cardas cable, Beyerdynamic T1 2nd Gen, Hifimam HE560/Hifiman balanced cable