Anyone heard of DK design group?

Yep, I find Blue Diamond Audio a pretty suspicious outfit.
They claim to sell all kinds of high end gear (Levinson, B&W speakers, Krell, McIntosh, ARC etc), but are NOT listed as a dealer on any of those manufacturers sites! When you call them, they will tell you that the VS-1 smokes all this other high end gear that they sell. Hmmmmmmm.

A lookup on Whois shows that Blue Diamond Audio uses the exact same webserver as DKDesignGroup.com Hmmmmmmmm.

Blue Diamond Nevada itself has a population of 282 people.
Anyone care to check what actually lies at 912 Village Lane in Blue Diamond Nevada?

Of course it all may be legit.

According to this, it's Blue Diamond Elementary School.
Then you might want to ask, who is D1575?
I always have to wonder when seeing a post about something I've never heard of by someone who hasn't posted before, or very little.

I spoke to one of the reps at AAC Distribution in NJ. These guys are distributors of many high-end audio brands. According to him, DK Design Group is owned by Conrad Johnson, although it is operated as a completely separate company. Go figure.

I am seriously consider purchasing one on Audiogon. Is this amp ligit? I am starting to concern after reading all your postings.

The amp may be legit (a lot of people seem to like it).
BlueDiamondAudio may not be.

Do some checking into the dealer you are looking at buying it from.

Caveat Emptor.