RUSSIAN 6H9C (6SL7GT) — Matched Quad 4 Pcs
Laboratory Verified
Made in Russia
Black Base
Bottom Leaf Getter
Amplitrex AT1000 Tested
Available for sale is a precision-matched quad (4 Pcs) of Russian 6H9C (6SL7GT) twin triodes. These vintage valves are built to military-grade standards, featuring durable Grey Plates, Black Base, and the sought-after Bottom Leaf Getter construction. Ideally suited for high-gain audio applications, these tubes provide exceptional clarity and warmth in Hi-Fi preamplifiers and vintage audio restorations.
Each unit has been rigorously screened using the Amplitrex AT1000. Performance results below are detailed as a percentage of factory specifications for the 6H9C (Ip = 2.3 mA / Gm = 1600 µMhos).
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 2896201 | T1 | 2.3 | 2.4 | 104% | 1600 | 1800 | 112% |
| T2 | 2.3 | 2.2 | 95% | 1600 | 1700 | 106% | |
| 2896230 | T1 | 2.3 | 2.6 | 113% | 1600 | 1800 | 112% |
| T2 | 2.3 | 2.3 | 100% | 1600 | 1700 | 106% | |
| 2896163 | T1 | 2.3 | 2.4 | 104% | 1600 | 1800 | 112% |
| T2 | 2.3 | 2.3 | 100% | 1600 | 1700 | 106% | |
| 2896159 | T1 | 2.3 | 2.5 | 108% | 1600 | 1800 | 112% |
| T2 | 2.3 | 2.4 | 104% | 1600 | 1700 | 106% |
About NOS Audio Tubes
Specializing in premium, laboratory-screened vacuum tubes with over five decades of expertise in the valve industry. Our Mumbai-based team manages a comprehensive inventory of 300,000 valves, ensuring reliability through rigorous testing on professional equipment like the Amplitrex AT1000.
Logistics Notice: Custom duties and taxes are the buyer’s responsibility. For shipping to extended delivery zones, please verify the destination before final checkout.
NOTE: WE HAVE MORE THAN 7000 PCS
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