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Amperex 12AX7 / ECC83 - dimple getter, matched pair, preamp grade

Amperex 12AX7 / ECC83 - dimple getter, matched pair
Amperex 12AX7 / ECC83 - dimple getter, matched pairAmperex 12AX7 / ECC83 - matched pair, phono grade
Price: $159.00
1 matched pairs in stock
Item Number: 734
Manufacturer: Amperex
Description

The 1970s Amperex 12AX7 / ECC83 tubes in this precisely matched pair have gray plates and dimpled disc getters (I66 series). The orange print on the glass has the Amperex globe logo. The
Heerlen, Holland factory codes are etched in the glass.
 
Testing

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 “preamp grade” on our custom noise testing equipment. They are quiet enough for all but the most sensitive phono circuits.

 
Pricing

These tubes are sold as a matched pair.
They ship in their original boxes with test results for each triode section. Singles, when available, are listed as Item 598.

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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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