Mazda ECC82 / 12AU7
PRECISION MATCHED PAIR | GREY PLATE | MADE IN ENGLAND | NOS NIB
English Production
Grey Plate
Matched Pair
Up for sale is a premium matched pair of vintage Mazda ECC82 (12AU7) tubes, New Old Stock in their original factory boxes. Manufactured in England, these tubes feature the classic Grey Plate construction and Ring Getters. Highly regarded for their smooth tonal balance and excellent reliability, they are a superb upgrade for high-fidelity preamplifiers and DACs.
Precision tested on our Amplitrex AT1000 digital laboratory tester, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 10.5 mA / Gm = 2200 µMhos). This pair has been hand-selected for near-perfect matching across all triode sections.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #2105001 | Triode 1 | 10.5 | 10.4 | 99.0% | 2200 | 2000 | 90.9% |
| Triode 2 | 10.5 | 10.8 | 102.8% | 2200 | 2000 | 90.9% | |
| #2105002 | Triode 1 | 10.5 | 10.2 | 97.1% | 2200 | 2000 | 90.9% |
| Triode 2 | 10.5 | 10.2 | 97.1% | 2200 | 2000 | 90.9% |
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
Custom duties and taxes are the responsibility of the buyer in their country.
Support: [email protected] Precision Verified — NOS Audio Tubes
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