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6688=E180F National UK black plate NOS unknown maker (14.2ma)

6688=E180F National UK black plate NOS unknown maker (14.2ma)

By Tube World

$ 13.99

6688=E180F National UK black plate NOS unknown maker

14.2ma

Gm=14,000

 

 

(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)

- Supratek Chenin, Cortese preamp
- Yamamoto 06-3 2010

See more: vacuum tube
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