Sunn amps, at the risk of adding to the growing hype, are bananacakes. In a good way.
I rescued a late 60’s 1200S from a co-worker who had it in his garage for a decade or three. When my tech got it going again, it turned out to have monstrous tone rivaling an SVT — at 30 pounds lighter.
Sunn, like many other amp companies, eventually switched away from tubes to solid state amps. They went under, and Fender eventually bought the name and reissued a few models, more in name than design and performance. That said, a good friend had a Sunn reissue Model T that sounded amazing…
Unfortunately, the vintage Sunn amps have gotten expensive and the big bass amps (1200 and 2000 models) now rival their high-wattage Ampeg brethren in terms of cost.
I don’t think I’ve ever seen this logo, so I’m taking the seller’s word that it’s the real deal. This one is probably for the collector more than the player, but it’s a cool glimpse into the early design.
$1500 on the Boston CL: http://boston.craigslist.org/gbs/msg/5299947147.html