Northstar MK1 - 250 USD
I've plugged this in recently, and there's some 60hz hum in the background. I don't want to take the time to troubleshoot it, so I'm slashing the price. You can probably replace the regulators and ground stuff properly to make things work. It's fully functional outside of the aforementioned issue.
This is the version with the discrete output stage, compare this to the Mk2 DAC, some info here
Price is before shipping/paypal.
Edited by NoPants - 4/14/15 at 3:06am