mloiaco
Well-known member
Has anyone used the Siemens N.O.S. EL-34's? If so, which amp did you use them in, and how was your experience?
Right, but this doesn't mean that they could not have been manufactured elsewhere, as far as I know. I just explained my latest findings about Siemens EL34 in another thread on the Plexi Palace, maybe you've seen it already?Russ said:Those are clearly stamped made in Germany.
I'm still reading through that massive amount of information, but so far I've understood that it's just the other way round: Siemens never made an EL34 themselves, they outsourced this task to others (maybe because they were more into high frequency applications like TV tubes etc.). In the '50s the EL34 labeled as Siemens were either made by Telefunken or Philips/Mullard, at least that's what is said there. Then (either from the '60s or '70s, still learning...) RFT in the former GDR took over who were the manufacturer, not a rebrander. They had four factories of which the one in Mühlhausen seemed to have produced most of their EL34s. Jogis Röhrenbude and its forum seemed to be crowded by people who either worked in the RFT factories or know people who did, so I tend to trust these informations.Russ said:RFT was just a manufacturing group mainly. They were made by anyone from Tesla to Telefunken to Siemens to Phillips to you name it depending upon the tube type. Unfortunately it is hard to fully identify the RFT as one brand or another without seriously studying the structure inside. The Siemens on the other hand were for the most part Siemens. They did make some tubes for others as others made some for them.
If I could only read German.... That article looks really interesting.
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