Anyone audition or own Margules electronics?

I'm interested in the SF220R pre-amp and the U280se amp. Comments on build quality, service, as well as sound would be appreciated. Not much on the 'net on these puppies.

Maybe this was your starting point. Does sound interesting tho.
I reviewed one of their integrated amps a while back...
good stuff from mexico, but not necc better than cj or arc or dozens of others