MULLARD M8162 / 12AT7WA — Matched Pair
Grade: NOS (New Old Stock)
Military Grade (WA)
Made in Great Britain
Military Grade (WA)
Made in Great Britain
Top Ring Getter
Short Grey Ribbed Plate
Original White Box
Precision Amplitrex AT1000 Tested
Short Grey Ribbed Plate
Original White Box
Precision Amplitrex AT1000 Tested
Available is a high-performance Matched Pair of Mullard M8162 (12AT7WA) dual triodes, precision-engineered in Great Britain. These are ruggedized military-grade “WA” variants, featuring the classic Short Grey Ribbed Plate construction and Top Ring Getter. Known for their exceptional low-noise floor and detailed sonic transparency, these NOS valves are a definitive upgrade for high-end preamplifiers and phase inverter stages.
Each triode has been laboratory-tested on the Amplitrex AT1000. Matching is calculated following the percentage method against factory design specifications ($Ip = 10.0$ mA / $Gm = 5500$ µMhos).
| Serial No. | Triode | Parameter Ip | Result Ip | % Ip | Parameter Gm | Result Gm | % Gm |
|---|---|---|---|---|---|---|---|
| 877034 | T1 | 10.0 | 8.5 | 85% | 5500 | 4200 | 76% |
| T2 | 10.0 | 10.2 | 102% | 5500 | 4990 | 91% | |
| 877078 | T1 | 10.0 | 8.9 | 89% | 5500 | 4360 | 79% |
| T2 | 10.0 | 13.4 | 134% | 5500 | 5020 | 91% |
Note: Custom duties and taxes are the responsibility of the buyer in their country.
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