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12BH7A Tungsol black plates used/good mid-1950's

12BH7A Tungsol black plates used/good mid-1950's "U" getter halo - smeared printing - in Tungsol box (13/20ma)

$ 29.99

1 low noise tube) 12BH7A Tungsol black plates used/good mid-1950's "U" getter halo - smeared printing - in Tungsol box 

1 section) 20ma Gm=3600

1 section) 13ma Gm=3000

Tested on Amplitrex


- Octave M90 mono amps (http://www.octave.de/)
- Quicksilver Audio V4 mono amp
- Quicksilver Triode amp
- Thor
- Doshi Alaap preamp
- Art Audio Diavolo
- Vexo S40 amp
- Art Audio Carissa Signature amp
- Art Audio PX25 amp
- Universal Audio LA2A

See more: vacuum tube
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