Sold me his Apogee mini-DAC with Sigma 11 PSU. Threw in some nice XLR interconnects too, along with all the stuff that came with it.
Good communication, quick shipping (USPS took 8 days to deliver but not his fault). Showed up VERY well packed in bubble wrap, and just bad luck that a nut INSIDE the Sigma 11 that was holding the torroidal transformer in place came loose. So, it got shaken up like a marimba by USPS. ID provided pics of what wires connect to where, and after few tries I got it working, and another couple of tries got all the hum to go away.
It was well worth the effort - the Sigma 11 PSU DOES make an audible improvement in the weight, impact, smoothness and depth of the sound coming from this DAC.
Highly recommended seller!