tubes, two ultralinear output transformers and one power transformer. Unlike its previous amplifiers, the Dynaco ST-70 was a ...
The circuit is a pretty conventional single-ended one with a two stage double triode preamp and a single power output tube. The transformers are usually the difficult part of a build like this one ...
There’s a mystique in audiophile circles about tube amplifiers ... and the high impedance of its output is brought down to speaker impedance with that mains transformer. Best of all it doesn ...