Thanks for clarifying the warranty situation Mike. When I inquired about a used unit, the seller had told me that I wouldn't have the warranty. It must have been a unit originally purchased from a non-authorized dealer.
I am also wondering about the same thing. Every review I read about PWD mk II is positive. I was convinced that this was the DAC I wanted to get. The only thing I was not happy with was the warranty situation - which is not transferable. I am puzzled by the number of PWD mk IIs I've seen for sale recently.