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(!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma) Image 1

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(!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma)

Name: (!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma)
Brand: tubeworldexpress.shop
SKU: 12b4a-ge-p9
Price: 18.99 USD
Availability: InStock
Rating: 5 (890 reviews)

$18.99 $21.99

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12B4 12B4A 1960's GE preamp tubes

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Preamp tubes

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Description

1 pair) 12B4A GE NOS 1960's - 1970's same build

1 tube) 30ma Gm=6600 GE

1 tube) 30.5ma Gm=6700 GE rebranded Raytheon

Matched on Amplitrex

Vplate=140

Vgrid=-15V

Good Ma range 25-40ma

Good Gm = 6000

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(!!) (Recommended Pair) 12B4A GE NOS 1960's - 1970's same build (30ma and 30.5ma)

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