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Amperex Bugle Boy 12AX7 / ECC83 - long plates, D getter

Amperex Bugle Boy 12AX7 / ECC83 - long plates
Price: $179.00
1 in stock
Item Number: 217
Manufacturer: Amperex
Description

This very rare 1958 Amperex 12AX7 / ECC83 tube has long gray plates with copper grid posts and a D getter with foil strip (mC5 series). The white print on the glass has the Admiral logo and says "Made in Holland." The Heerlen factory code is etched in the glass.


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

This tube tests as “phono grade” for noise—the quietest range—on our custom noise testing equipment. It is an excellent choice for sensitive applications such as microphone preamps, DA converters, and phono stages.


Pricing

This tube is sold individually.
Matched pairs, when available, are listed as Item 734. It ships in a new white box with test results for current draw (mA) and transconductance (Gm). Photo is of the actual tube.

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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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