Ken Rone

Particularly confusing is that the output transformer to the speaker is not shown in the photos I have looked at, I see it in the schematics but not in the position on top of the chassis (centrally). I don't know how to test it and don't know its specifications if I have to replace it. The same holds true for most of the other stuff too. I do have all 4 tubes but again don't know if they are any good and how to test them. -