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RE: Help With Futterman Mono Amps

Posted by anthony.naso@hotmail.com on March 3, 2016 at 11:43:49:
No what we have found here after 3 hours of investigation is that the original amps used the 6GF7 as the regulator tube and not the eventual 6LU8. That zener chain that we all commented on above is not original. JF used V83R4 tubes which are still in the amp but likely dead so that is why the zener chain showed up I suspect. The zener chain is made up of old Motorola 2346-108 zeners?? I could not even find the part number on the web.