I'm a bit confused by the review provided by @dbb. The referenced review says:
"I fed both dacs via computers (an Asus mini and an Asus laptop) because I had two. Thus I could do quick comparisons by preamp input switching. I recently bought an Ifi Zen Stream network bridge/streamer which, after some frustration, I hooked up via ethernet cable."
These are relatively noisey/cheap sources to compare expensive dacs with. Not remotely in the same performance category as the dacs. No mention of the quality of the cabling. Are we talking a $5 ethernet cable or Audioquest Diamond?
If someone with an end-to-end great system made the comparisons, I'd find the results more useful. You're always held back by the weakest link in the chain, especially when it is the source.
At least @dbb described his equipment he was reviewing with. Too many don't. And he was certainly thorough and articulate!