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Sylvania 12AX7WA - long gray plates, matched pair

Sylvania 12AX7WA - long gray plates
Price: $119.00
Item Number: 626
Manufacturer: Sylvania

The military spec Sylvania 12AX7 tubes in this precisely matched pair have gray plates with copper grid posts and halo getters. The blue or green print on the glass has the PhilipsECG label and reads "JAN 12AX7WA." 

These tubes test as new with balanced sections.
They are precisely matched for both current draw (mA) and transconductance (Gm). They have been screened for gas, heater-cathode leakage, shorts, and excessive noise and microphonics on each triode section. They were 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

These tubes test as "phono grade"--the quietest range for noise and microphonics--on our custom noise testing equipment. They are an excellent choice for sensitive applications such as microphone preamps, V1 positions, DA converters, and phono stages.


These tubes are sold as a matched pair.
They ship in their original boxes with test results for each triode section. Photo is a sample pair form the lot. Singles, when available, are listed as Item 312.
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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