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(!!!) (Best Pair) 12B4A GE NOS 1962-1977 same build (52ma and 53ma) Image 1

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(!!!) (Best Pair) 12B4A GE NOS 1962-1977 same build (52ma and 53ma)

Name: (!!!) (Best Pair) 12B4A GE NOS 1962-1977 same build (52ma and 53ma)
Brand: tubeworldexpress.shop
SKU: 12b4a-sylvania-nos-pair-4
Price: 18.99 USD
Availability: InStock
Rating: 5 (1038 reviews)

$18.99 $21.99

Tags:

12B4 12B4A 1960's GE

Categories:

Preamp tubes

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Description

1 pair) 12B4A GE NOS same build

1 tube) 52ma Gm=8200 1977

1 tube) 53ma Gm=8000 1962

Matched on Amplitrex

Vplate=140V

Vgrid=-15V

Good mA range 25-40ma

Good Gm = 6000

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(!!!) (Best Pair) 12B4A GE NOS 1962-1977 same build (52ma and 53ma)

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