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(!) (#3 BEST 6688) 6688=E180F Amperex PQ USA NOS/80% triple mica gold pins 1962 (9.2ma)

$ 21.99

1 tube) 6688=E180F Amperex PQ USA NOS triple mica gold pins 1962

9.2ma Gm=14,200

Tested on Amplitrex

Good NOS Ma range 11-13ma

  

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

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

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