[Jukebox-list] 6sj7 metal or glass difference

[Ron Rich]

Rick,
  It is my understanding that it makes no difference in most cases--Someone who knows more, please correct this if it's wrong. The metal tube, in most cases has the metal connected to ground, thus shielding it from outside interference, and also shielding anything on the outside from being inter feared with--
  I  usually attempt to go with the markings on the amp, or schematic. If it has the number marked 6SJ7/6SJ7G ( or GB) either is usable. If it just says 6SJ7, I prefer to use a meal tube. Ron Rich
   
   
   
  Rick Force <flashbk13 at hotmail.com> wrote:
  Hi all,
Is there a reason for using a metal vs glass envelope tube? In this case, a 6sj7 in the ami b amp. I need to replace it (this one is metal) and want to buy the correct one. Thank you, Rick.
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