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RE: 300B were made through the 80s for AT&T...

2A3 was made in massive quantities for replacements in radios and amplifiers, probably also some military use. Still fairly easy to find on the used or NOS market.

Those vintage UK tubes you're talking about are rare and precious. The closest thing I have is a pair of original GEC KT66. Absolutely beautiful tubes, I hope I can find another pair some day!


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  • RE: 300B were made through the 80s for AT&T... - maxhifi 13:41:01 10/14/21 (0)

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