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6688=E180F National UK gray plate NOS probably made by Amperex (16ma) Image 1

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6688=E180F National UK gray plate NOS probably made by Amperex (16ma) Nav Image 1

6688=E180F National UK gray plate NOS probably made by Amperex (16ma)

$15.00 $17.99

6688

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6688 E180F gold pins Holland Rogers Supratek Yamamoto

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Preamp tubes

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Description

6688=E180F National UK gray plate NOS probably made by Amperex

16ma

Gm=14,100

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

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

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