GE JAN-12AT7WA — Matched Pair (2 Pcs)
Made in USA
Grey Plates
Top Ring Getter
Low Noise / Low Microphonics
Amplitrex AT1000 Tested
New In White Boxes
Up for sale is a highly reliable, beautifully matched pair of two pieces (2 Pcs) of vintage original GE JAN-12AT7WA twin triode vacuum tubes. Built under strict Joint Army-Navy (JAN) military specifications for extreme durability, these long-life ruggedized American valves are celebrated for their exceptionally clean, dynamic performance, outstanding clarity, and dead-silent background floor. They make a marvelous premium upgrade for high-fidelity preamplifiers, phase inverters, drivers, and vintage pro-audio gear.
This premium pair exhibits iconic early General Electric engineering featuring robust Grey Plate construction paired with a highly efficient Top Ring Getter configuration. Stamped with original crisp green military identification branding directly on the glass envelopes, both valves are pristine, completely unused, and come packaged safely inside fresh protective white collector boxes.
Testing & Verification: Both dual-triode valves have been thoroughly tested, analyzed, and closely matched on our laboratory-calibrated Amplitrex AT1000 tester. Evaluated under full operational factory handbook voltages against the standard 12AT7 factory datasheet parameters of Ip = 10.0 mA and Gm = 5,500 uMhos, both sections display excellent electrical characteristics, robust emissions, and tightly balanced mutual conductance across the pair.
| Sr. No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | Percentage Ip | Parameter Gm uMhos | Result Gm uMhos | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2390080 | T1 | 10.0 | 7.5 | 75% | 5500 | 4710 | 86% |
| T2 | 10.0 | 6.8 | 68% | 5500 | 4640 | 84% | |
| 2390332 | T1 | 10.0 | 7.6 | 76% | 5500 | 4700 | 85% |
| T2 | 10.0 | 8.6 | 86% | 5500 | 4770 | 87% |
About NOS Audio Tubes
We are specialized suppliers of high-grade vintage vacuum tubes and valves, maintaining an industry lineage established back in the 1970s. With an extensive inventory of nearly 300,000 components, we serve high-end audiophiles and vintage equipment restoration collectors worldwide. Every tube is strictly evaluated using calibrated industrial testing instruments such as the Amplitrex AT1000 to guarantee absolute transparency.
Notice: Custom duties and Taxes are the Responsibility of the Buyer in their Country.
Note : We have more than 400 Pcs
Support: [email protected]
NOS Audio Tubes — Mumbai, India
Reviews
There are no reviews yet