ATES ECC81 / 12AT7 — Vintage USA Production
Grade: Gold Series
Laboratory Verified
Made in U.S.A.
Laboratory Verified
Made in U.S.A.
Top Square Getter
Radio Corporation of America License
Dual Triode ECC81 / 12AT7
Amplitrex AT1000 Verified
Radio Corporation of America License
Dual Triode ECC81 / 12AT7
Amplitrex AT1000 Verified
Up for sale is a single, high-performance ATES ECC81 / 12AT7 vacuum tube, manufactured in the U.S.A. under license from the Radio Corporation of America. This specimen features a vintage Top Square Getter construction, highly regarded for its stable performance and excellent sonic characteristics.
The tube has been professionally tested on an Amplitrex AT1000 analyzer. This valve is ideal for audiophiles seeking reliable American-made vintage glass for preamplifiers, phase inverters, or driver stages.
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 2156001 | Section 1 (T1) | 10.0 | 7.0 | 70% | 5500 | 4440 | 80.7% |
| Section 2 (T2) | 10.0 | 6.6 | 66% | 5500 | 4200 | 76.3% |
Technical Note: Percentage calculations are based on Amplitrex factory standard parameters for the ECC81 family (Ip = 10.0mA, Gm = 5,500 uMhos).
Note: Custom Duties and Taxes are the Responsibility of the Buyer in their Country
Email: [email protected]
Precision Verified — NOS Audio Tubes
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