Allegro tube
HI all
Recently acquired the great allegro 604s from my friend.
However, it seems that the unit I acquired no longer uses the original tube.
I do have a question regarding type of tubes used, can anyone verify if these are the correct type of tubes used?
The first stage (next to input trans) uses 12ax7, the 2nd stage uses 6072.
What about the rectifier tube? What was original used? Mine comes with Osram U709. (EZ81)
Thanks alot
Eric
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