Wadia USB

The new Wadia 381i and the 581ise now sport an USB input. I am curious if anyone has had the opportunity to listen to either through the USB inputs. If so, have you had the opportunity to compare it to any of the other current USB dacs available?
Great question.

I would also love to know how these CD players handle Wadia's iDoc which is a high jitter source...

A dose of its own medicine, so to speak....
The thing i love from Wadia 581ise, is that uses a number of proprietary innovations, including updated versions of Wadia's renowned DigiMaster decoding and upsampling software