MAZDA ECC81 / 12AT7 — Single Premium Valve 1 Pc
Laboratory Verified
Made in France
Grey Plate Construction
Dual Triode
Amplitrex AT1000 Tested
Up for sale is a single 1 PC Mazda ECC81 (12AT7) premium dual triode valve, Made in France. This unit features the desirable Grey Plate internal structure and a Top Ring Getter. Mazda valves are highly regarded in the audiophile community for their detailed high-frequency response and musicality in pre-amplification stages.
This valve has been strictly screened on the Amplitrex AT1000 industrial tube analyzer. Percentages are calculated against the standard ECC81 factory specifications (Ip = 10.0 mAdc / Gm = 5500 µMhos).
| Serial No. | Test Triode | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| 4903001 | T1 | 10.0 | 8.8 | 88% | 5500 | 5900 | 107% |
| T2 | 10.0 | 11.5 | 115% | 5500 | 6550 | 119% |
About NOS Audio Tubes
Based in Mumbai, India, we maintain a vast inventory of over 300,000 vintage valves with a history in the industry dating back to the 1970s. Every component is professionally verified using the Amplitrex AT1000 to ensure laboratory-grade accuracy for audiophiles worldwide.
Note: Custom Duties and Taxes are the Responsibility of the Buyer in their Country
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