12au7 mysterious tube

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Hi there to all of the subject matter experts :)

Can somebody shed the lite on this tube? (picture attached) It's branded Triad and has long box plates.

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Topic - 12au7 mysterious tube - nick-seattle 17:04:31 06/24/12 (2)

RE: 12au7 mysterious tube - baileyler 18:51:37 06/24/12 (1)

RE: 12au7 mysterious tube - tvr2500m 22:30:29 06/29/12 (0)

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