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Siemens 12AX7 / E83CC - phono grade

Siemens 12AX7 / E83CC - phono grade
Price: $109.00
Item Number: 792
Manufacturer: Siemens

This Siemens E83CC tube is a premium quality 12AX7 / ECC83 tube. It has gray plates and a halo getter. The white label with the Siemens logo is missing, but the Munich, West Germany factory code is etched in the glass.

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/V1”—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, 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). Photo is a sample from the lot. Matched sets, when available, are listed as Item 952.

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Siemens 12AX7 / ECC83 - dual post getter, OEM
Siemens 12AX7 / ECC83 - dual post getter, various labels
Price: $69.00
Siemens 12AX7 / ECC83 - dual post getter, various labels
This 1960s Siemens 12AX7 / ECC83 tube was made in West Germany (I61 or I62 series) and labeled for other companies. It has a halo getter with dual support posts. The Munich factory code is etched in the glass. Tube tests as new with low noise.
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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