"Patrick Turner" wrote

We cannot advise until we see the schematic.


Didn't stop me. No harm in a shot in the dark.

the Dynaco has fixed bias + some shared cathode bias with no bypass
and no balance adjustment AFAIK. Tom says his are cathode biased
with balance adjustment. Are there lots of ways of doing this?

A search suggests that Tom has tried and failed to find a circuit
diagram.

cheers, Ian