Underwood Mod to Denon 5900


Has anyone heard the Underwood modification to the Denon 5900?
Ag insider logo xs@2xp0155
I have to tell you folks, my Underwood modded 5900 is really starting to sound incredible! I still am trying to get my head around just how to use every feature of the 5900, but in two-channel, I am very impressed with the detail, the presence, and the enhanced reality of the sonic images I am hearing. Dan's tubed output stage sounds like something special to me, although it is the first tubed-output digital source that I have used.
Never mind. I got a out of date cached page from Google and missed your response.