MULLARD M8162 / 12AT7WA – MATCHED PAIR (2 PCS)
Grey Plate
Top Ring Getter
Military Spec (M8162 / CV4024)
Date Codes: R7F, 9D
Dual Triode 12AT7 / ECC81
New in White Box
Amplitrex AT1000 Tested
Up for sale is a matched pair (2 pcs) of genuine vintage NOS Mullard M8162 / 12AT7WA high-grade dual triode vacuum tubes, supplied in individual white boxes. Renowned worldwide for their smooth, warm tone, deep soundstage, and ultra-low noise floor, these British-made military-spec (CV4024) tubes feature grey plates, top ring getters, and authentic date codes (R7F, 9D). Ideal for high-end audio preamplifiers, phase inverters, and driver stages requiring 12AT7 / ECC81 series tubes.
Both tubes have been fully tested on a precision Amplitrex AT1000 tube tester. Measured Plate Current (Ip in mA) and Mutual Conductance (uMhos) alongside percentage performance ratings relative to nominal reference specs (Reference: 10.0 mA / 5,500 uMhos) are detailed in the table below.
| Serial No. | Triode Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO.4585009 | Triode 1 | 10.0 mA | 13.6 mA | 136% | 5500 | 6710 | 122% |
| Triode 2 | 10.0 mA | 11.0 mA | 110% | 5500 | 6070 | 110% | |
| SR.NO.4585008 | Triode 1 | 10.0 mA | 13.5 mA | 135% | 5500 | 6910 | 126% |
| Triode 2 | 10.0 mA | 14.1 mA | 141% | 5500 | 6880 | 125% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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