04-13-2014, 11:41 AM
My set has the 6A3 output tubes. There are a number of small changes and if they are original to the set or not is hard to say but they look like they could be. The most obvious is a 50k ohm resistor in series with the coupling cap to the centre terminal of the volume control. It is a dogbone of the correct style as the rest of them and sure does look factory. There are more but that sticks out in my mind, I will have to document the others.
Gregb
Gregb