Sunn Fans,
I posted this amp earlier under the D.I.Y. forum for those interested in building something similar to a Sunn 60 watt head. As Loudthud points out, the transformers are not the same as Sunn, nor are the phase inverter or the tone recovery tube. So the only real similarity is the use of a pair of KT88's (or 6550) output tubes and a vague cosmetic resemblance to a Sunn Model T.
I doubt that there are any grounds for copyright / trademark / patent infringement here. Frankly, I'm surprised that Sunn didn't get into legal trouble with Dynaco back in the 60's. Sunn's designs were much more closely based on Dynaco's circuitry than Weber's design is related to Sunn's.
I've built one of Weber's 6M18 kits......basically a variation on the Marshall 18 watt platform. There are a ton kits and boutique amps out there based on Marshall, as well as Fender designs. Remember that Jim Marshall based the first JTM-45 on Fender's Bassman (5F6A), and Leo Fender based the 5F6A on a Western Electric circuit! There is very little completely original tube circuit design out there. Most amp designers have studied the classic circuits and come up with variations, modifications or new combinations. This makes for a lot of "flavors" of amps out there. And just like with cooking......you can stir up your own receipe at home if you are so inclined!
Ted Weber makes very nice, well-priced kits, geared for experienced hobbyists and amp techs, that you can build to his stock schematic or hot-rod to suit yourself. I just thought some of you guys might be interested!
Ryan
