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(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
(!!) (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)
By Tube World
$ 129.99
1 slightly micophonic low noise tube) B309=12AT7 GEC UK black plates "D" getter NOS 1950's
9.6ma Gm=5400
10.8ma Gm=5700
- similar build to 12AT7 Brimar black plates 1950's
See more: vacuum tube
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 (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_94cc1fe8-5cb6-4cf3-b116-887944b9ebed.jpg?v=1692049976){kind=link}
 (slightly microphonic) B309=12AT7 GEC UK black plates "D" getter NOS 1950's (9.6/10.8ma) "Pin It")