Quote:
Originally Posted by G3PIJpeter
Why does it have 2 x 12AX7 instead of the much simpler EF91 or similar? None of the standard circuits that I have seen uses a pair of double triodes.
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It might use one - or both - of those twin triodes in the cascode config. A cct. diag. will confirm - but I understand that is not available. I do realise that tracing out the cct. 'by inspection' is not exactly an easy task, but sometimes needs must, to quote a phrase.
Al.