NEC 6SJ7GT – MATCHED PAIR (2 PCS)
Grey Round Plate
Metal Base
Top Ring Getter
Made in Japan
Sharp-Cutoff Pentode 6SJ7GT / 6SJ7 / 5693
New in Original Box
Amplitrex AT1000 Tested
Up for sale is a matched pair (2 pcs) of rare vintage NOS NEC 6SJ7GT sharp-cutoff pentode vacuum tubes, manufactured in Japan by Nippon Electric Company and complete with their original NEC boxes. Highly sought after by audiophiles and custom amplifier builders, these Japanese vintage gems feature heavy-duty metal bases, dark grey round plate structures, and top ring getters. An outstanding low-noise input and driver tube replacement for vintage audio preamplifiers, instrument amplifiers, and classic audio equipment requiring 6SJ7 / 6SJ7GT / 5693 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: 3.0 mA / 1,600 uMhos) are detailed in the table below.
| Serial No. | Tube Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Reference / Result | Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | |
| SR.NO.5423001 | Single Pentode | 3.0 mA | 2.9 mA | 97% | 1600 | 1800 | 113% |
| SR.NO.5423002 | Single Pentode | 3.0 mA | 3.5 mA | 117% | 1600 | 1900 | 119% |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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