MULLARD M8136 / ECC82 – MATCHED PAIR (2 PCS)
Small Ring Getter
Grey Plate
Made in Great Britain
Military / Industrial M8136 / ECC82
New in White Box
Amplitrex AT1000 Tested
Up for sale is a matched pair (2 pcs) of rare and highly sought-after vintage NOS Mullard M8136 dual triode vacuum tubes, manufactured in Great Britain and supplied in individual white boxes. The M8136 is the ultimate military-spec, ruggedized, long-life industrial grade equivalent to the standard 12AU7 / ECC82. Featuring robust grey plate construction and small top ring getters, Mullard M8136 tubes are legendary among audiophiles for delivering exceptional soundstaging, incredible detail, lush midrange warmth, and ultra-low microphonics. An elite upgrade for high-end preamplifiers, line stages, and hi-fi audio gear utilizing 12AU7 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 factory reference specs (Reference: 10.5 mA / 2,200 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.3482011 | Triode 1 | 10.5 mA | 9.2 mA | 88% | 2200 | 2040 | 93% |
| Triode 2 | 10.5 mA | 8.2 mA | 78% | 2200 | 2000 | 91% | |
| SR.NO.3439017 | Triode 1 | 10.5 mA | 8.6 mA | 82% | 2200 | 2000 | 91% |
| Triode 2 | 10.5 mA | 8.6 mA | 82% | 2200 | 2000 | 91% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
Reviews
There are no reviews yet