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(slightly microphonic tube) 12AU7 RCA tall black ribbed plates

(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

See more: vacuum tube
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