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Matsushita 12AX7 / ECC83 - gray plates

Matsushita 12AX7 / ECC83
Price: $49.00
Item Number: 903
Manufacturer: Matsushita

This 1970s Matsushita 12AX7 / ECC83 tube was made in Japan. It has Mullard style short gray plates and a halo getter. The white print on the glass has the Matsushita logo. These are excellent quality vintage 12AX7 tubes at an affordable price.

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

This tube tests as “phono grade”—
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.


This tube is sold individually. It ships in a new white box with test results for current draw (mA) and transconductance (Gm) for each triode section.

Matched pairs, when available, are listed as Item 902.
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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