Bow Technologies ZZ8 DAC, Impressions ?

I have recently seen a couple of them on sale on Audiogon.
I would like to know if anyone has heard them ? I know the ZZ8 CDP was a legend, how does this DAC compare with it ?
The DAC is priced at $3k (attractively priced), where does it stand compared to other DACs in that price range and a league higher ?