That's actually an excellent DAC. I heard it quite some time back (a year, give or take) and it had a very musical sound. Not the last word in detail, but not the typical fuzzy NOS sound either.
It's actually a clone of the Kusunoki DAC, which is why Peter does not offer it for sale on his website, only through forums. It is available both as a kit and assembled, though I fear both ways it might be out of budget.