I'll chime in, Mr Bronk.
Put yourself in Dusty's position and imagine trying to answer the questions you just posed.
I'm biting my tongue.
Well, Russell, Although perhaps expected, the question about the other amps out there, is a reasonably fair one. The D100 circuit is not the standard found on the UCD module. That's ok. No need to bite your tongue, that would hurt. Since I haven't listened to any of his amps, I was trying to get a feel as to how they sound versus the competition in that price point or better. It does appear that the reviews I have read, seem to think these are keepers, and I wouldn't go wrong in getting one. I did read a quick review on the audiogon from him which answered my question about the original UCD stuff versus his. Was I trying to have him put down other amps? A solid No! I've heard he's to much of a gentoleman to do that. So I'll just leave the one question about comparing these to other amps of similar price or more.
Ray