2A3 Jewel stereo power amp

Please note the accent is on POWER amp !!!!!!!!

For those of you unfamiliar with the 2A3,please note that this beast can ONLY put out a meager 4 watts in normal use. Pushed, we can get 6 watts.
This amp is simple: one triode used as a driver: the high mu 6SL7, which has excellent sound and the 2A3 output tube, which is the finest sounding triode on the planet, but only puts out low power. It exhibits however such finesse and can display such emotions and nuances that we ought to live with its low power.

The circuit was designed in my youth ( beginner years ) and is rock solid : no extravaganza anywhere .Simple RC coupling , negative biased output stage , Lundahl double C core transformers and no fuss high voltage rails .Also, gnd follows signal is my preferred method for avoiding hum .
Some tricks are used in this design, but they are more in the fine details than in the big picture.

A few pictures + complete schematic .

copyright webdesign 1997 aquablue Benny Glass