Um, a couple more comments:
1. Galvanic isolation? Like I said, of course we have that. I simply thought no competently designed, non-bus-powered device would be without it, so we never mentioned it. It's like saying your new lamp comes with a power cord. Duh.
2. Upgrades may not happen? Are you seriously arguing it's better to spend a lot more money on a DAC that's designed to be thrown away when tech changes, versus getting one that offers insane price/capability/value even without considering upgradability? It's not like Bifrost requires a second mortgage or something.
GAAAH, the more I hear about it, the more I want one :P