I have a Wyred 4 Sound DAC1 and would be interested in hearing anyone comparing it to the DAC2. It was my understanding, other than the USB, IS2 and the preamp functionality, the two are audibly identical. When I corresponded with Wyred 4 Sound, they indicated that the preamp function in the DAC2 is good but not as good as their integrated amps. This is why I went for the DAC1 with a Wyred 4 sound integrated coming up as my next purchase.
My system is comprised of Magnepan 1.7s, Bada Amp and Preamp (Chinese), Netgear 9150 which holds all of my 315 CDs feeding the Wyred 4 Sound DAC1. Amazingly good sound.