MULLARD EF86 / 6267 – MATCHED PENTODE PAIR (2 PCS)
Made in Great Britain
Mesh Plate Construction
Top Ring Getter
Low-Noise Audio Pentode EF86 / 6267
New in White Box
Amplitrex AT1000 Tested
Up for sale is a matched pair (2 pcs) of iconic vintage NOS Mullard EF86 / 6267 low-noise audio pentode vacuum tubes, supplied in individual white boxes. Made in Great Britain, these British audio valves feature classic round mesh plate shielding structures and top ring getters. Worldwide recognized by audiophiles and tone enthusiasts for lush midrange musicality, extended natural warmth, exceptionally low microphonics, and ultra-quiet noise performance. An essential matched pair upgrade for Vox AC15/AC30 V1 channels, high-end tube preamplifiers, and vintage condenser microphone circuits.
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: 3.0 mA / 1,800 uMhos) are detailed in the table below.
| Serial No. | Tube Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO.210190 | Single Pentode | 3.0 mA | 3.8 mA | 127% | 1800 | 2200 | 122% |
| SR.NO.210240 | Single Pentode | 3.0 mA | 3.9 mA | 130% | 1800 | 2200 | 122% |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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