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Sylvania 12AX7WA - long gray plates, preamp grade
 Sylvania JAN 12AX7WA - long gray plates, halo getter Sylvania 12AX7WA - long gray plates, halo getter |
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SOLD OUT
Item Number: 312
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Description
This 1970s military spec Sylvania 12AX7WA tube has long gray plates with copper grid posts and a halo getter. The green print on the glass reads "JAN 12AX7WA" and 12AX7WA is etched in the glass.
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.
Noise and microphonics
Tubes that test as “preamp grade” are an excellent choice for sensitive applications such as preamplifiers.
Pricing
This tube is sold individually.
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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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