Assuming the demand for r2r/nos dacs continues to increase (although I think that outside of the market probably well represented by the membership here, even the concept of an external dac is pretty esoteric i.e., it's a small part of a miniscule market) there will appear a disproportionate number of poor ones. I would think that the cost floor to design and build a good dac of this sort is much higher than one using an off-the-shelf chip. But attempts to build it for less will result in what you see here. And widespread and contagious cognitive dissonance, expectation bias, and confirmation bias will result in many gushing reviews. Many hipsters will buy them to listen to mp3s at 128kbps. It will share pride of place with the (dusty) turntable next to it. I've already seen one ad (for what, I wish I could remember ) comparing the advertiser's r2r dac to vinyl, as in the way digital used to be converted when music was still good or some such crapola. Don't start without me, I just have to freshen this up.