I've heard the SAC Minuet (EL34 SE amp) on a pair of Fostex FE127 speakers...sounded wonderful. Comparing it with a SI Super-T on the same speakers, I preferred the Minuet hands down. Aural Thrills is the US distributor, and Tom Kenny is a great guy to deal with.
From what I understand, SAC is primarily a transformer company (Silk trannies) that engineers amps around some of its custom-made iron. They make only a certain number of any given amp, and then retire that design and develop a new one. I believe they are now sold out of the Minuet, and its replacement won't be out for another couple months. Earlier they made an EL84 SE amp that went by a different name (the "Minute" I think). I've traded emails with someone who owns that amp (and writes for sixmoons), and he's very fond of it.
No affiliation whatsoever with SAC or Aural Thrills. I just like what I heard.