Brimar 12AU7 / ECC82
LONG BLACK PLATE | D GETTER | MADE IN ENGLAND | NOS
Long Black Plate
D Getter
Amplitrex Tested
Available for your collection is a highly desirable Brimar 12AU7 / ECC82, featuring early-production Long Black Plates and a D Getter. Manufactured in England, these black-plate units are legendary for their superior tonal warmth and musicality compared to later grey-plate versions.
Precision tested on our Amplitrex AT1000 digital laboratory system, the results below utilize the Percentage Method against original factory design-center specifications (Ip = 10.5 mA / Gm = 2200 µMhos). This tube shows excellent triode-to-triode balance, ideal for critical audio applications.
| Serial No. | Test Triode – T1/T2 | Parameter ip mAdc | Result ip mAdc | % Ip (Emission) | Parameter Gm uMhos | Result Gm uMhos | % Gm (Transc.) |
|---|---|---|---|---|---|---|---|
| #2270003 | Triode 1 | 10.5 | 7.4 | 70.5% | 2200 | 1600 | 72.7% |
| Triode 2 | 10.5 | 7.2 | 68.6% | 2200 | 1600 | 72.7% |
⚠️ 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.
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