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Sylvania 12AX7 - long gray plates, various labels


Price: $59.00
1 in stock
Item Number: 211
Manufacturer: Sylvania
Description

This 1965 Sylvania 12AX7 has long gray plates with copper grid posts and a halo getter. The green print on the glass has the Shield logo.
 

Testing

This tube tests as new. It has been screened for gas, heater-cathode leakage, shorts, and excessive noise and microphonics on each triode section. It was tested at typical operating voltages on a laboratory grade Amplitrex AT1000 (manual setting, fixed bias mode). Learn more about our testing process here.
See product options for current availability.

Noise and microphonics

Tubes that test as "phono grade" are the quietest range for noise and microphonics on our custom noise testing equipment. It is an excellent choice for sensitive applications such as microphone preamps, V1 position in guitar amps, DA converters, and phono stages.

Pricing

This tube is sold individually. It ships in its original box with test results for current draw (mA) and transconductance (Gm). Photo is a sample from the lot. Matched sets, when available, are listed as Item 456.

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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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