RCA JAN-12SN7GT BLACK COATED — Matched Quad 4 Pcs
Made in USA
Black Coated Glass
Black Base
Date Code: K5E
New in Original GVT Boxes
Amplitrex AT1000 Tested
Up for sale is an exceptional, beautifully matched quad set of four pieces (4 Pcs) of vintage original RCA JAN-12SN7GT vacuum tubes. These are high-grade Joint Army-Navy (JAN) military-surplus stock, engineered to the highest performance standards for ruggedness, exceptionally low noise floor, and superb long-term reliability.
As documented in our visual inventory references these classic components feature the distinctive vintage Black Coated Glass envelopes and sturdy Black Bases stamped with the authentic matching vintage factory date code K5E alongside the original RCA emblem. They come complete, preserved in their original vintage government-issue (GVT) boxes.
Testing & Verification: Every single triode section across all four valves has been fully tested and screened on our calibrated digital Amplitrex AT1000 analyzer under standard reference operating parameters Detailed testing data and percentage health calculations are fully listed in the matrix below.
| Sr. No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | Percentage Ip | Parameter Gm uMhos | Result Gm uMhos | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 2353138 | T1 | 9.0 | 8.0 | 89% | 2600 | 2700 | 104% |
| T2 | 9.0 | 7.8 | 87% | 2600 | 2600 | 100% | |
| 2353120 | T1 | 9.0 | 7.2 | 80% | 2600 | 2700 | 104% |
| T2 | 9.0 | 7.5 | 83% | 2600 | 2600 | 100% | |
| 2353025 | T1 | 9.0 | 9.4 | 104% | 2600 | 2700 | 104% |
| T2 | 9.0 | 8.0 | 89% | 2600 | 2600 | 100% | |
| 2353239 | T1 | 9.0 | 9.2 | 102% | 2600 | 2700 | 104% |
| T2 | 9.0 | 8.6 | 96% | 2600 | 2600 | 100% |
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.
Note: Custom duties and Taxes are the Responsibility of the Buyer in their Country.
NOTE : WE HAVE MORE THAN 200 PCS
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