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Original Message
RE: I know I have been tough on 12ax7 but.......
Posted by tvr2500m on January 27, 2011 at 13:23:58:
Does that Mullard have a code on it. I believe that it's not Blackburn or Mitcham tube, and that the only Philips shop that made this tube was Valvo Hamburg. Does this tube has "D" code on it anywhere?
- SJ