Quote, from the first article sent by Jorge:

"It produces music with an authority and an ease that is unequaled in the audio world. It tends to have a dry and "correct" sound rather than a "tube amp" sound. If you want the warmth and carmel sound of vintage tubes, this may not be the amplifier for you."

I bet the people in the H-K marketing department wish they could have come up with that kind of prose. My guess is the owner will not be interested in parting with it, but I have zilch to lose trying...

And thanks for warning me off of the PAT-4, Jorge. I was considering getting it.
He also has the PAT-2, I believe, which is a tube pre. He wants two bills for that one.