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(slightly microphonic tube) 12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's (9.4/10.0ma)
(slightly microphonic tube) 12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's (9.4/10.0ma)
$ 19.99
1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's
9.4ma Gm=1900
10.0ma Gm=2000
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 12AU7 RCA tall black ribbed plates "D" getter halo tests like new 1950's (9.4/10.0ma) "Pin It")
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