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Telefunken 12AX7 / ECC83 - smooth plates, various labels, phono grade

Telefunken 12AX7 / ECC83 - smooth plates
Price: $109.00
SOLD OUT
Item Number: 240
Manufacturer: Telefunken
Description

This 1964-65 Telefunken ECC83 / 12AX7 has smooth gray plates and a diamond imprint on the base. The white print on the glass has the Dynaco logo and says “Made in Germany.”

Don't miss this opportunity to hear one of the best sounding—and hardest to find—12AX7s ever made!
 
Testing

This tube tests as new with balanced sections. 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 “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 V1 positions, microphone preamps, DA converters, and phono stages.

Pricing

This tube is sold individually. It ships in a new white box with test results for current draw (mA) and transconductance (Gm). Photo is of the actual tube. Matched sets, when available, are listed as Item 617.
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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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