Brian,
The bias is self adjusting on this amp.Not sure about the difference between those tubes. I have the metal plates from Sophia Electric and absolutely love them..much better across the board than the stock 845 IMO.
Ken
The bias is self adjusting on this amp.Not sure about the difference between those tubes. I have the metal plates from Sophia Electric and absolutely love them..much better across the board than the stock 845 IMO.
Ken