Tubes Asylum

RE: 6sn7 GTA or GTB ???

75.146.141.145

In Reply to: RE: 6sn7 GTA or GTB ??? posted by astralnavigator on October 21, 2009 at 11:10:20

To elaborate on astralnavigator's point, the real Sylvania "chrome domes" have the getter extending about 1/2 way down the straight sides of the glass, whereas the later Sylvanias have a top getter that only covers the domed part of the glass envelope.

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