GE JAN 6V6GT – MATCHED QUAD (4 PCS)
Made in USA
Grey Round Plate
Top Ring Getter
Black Coin Base
Beam Power Tetrode 6V6GT
New in White Box
Amplitrex AT1000 Tested
Up for sale is a closely matched quad (4 pcs) of vintage New Old Stock (NOS) GE JAN 6V6GT military-specification beam power tetrode vacuum tubes, supplied in individual white boxes. Manufactured in the USA by General Electric under strict Joint Army-Navy standards, these prized valves feature grey round plate structures, top ring getters, low-profile black coin bases, and clear GT tubular glass envelopes. Renowned among guitarists and audiophiles for rich harmonic saturation, sweet dynamic headroom, low noise floor, and rugged military reliability. An ideal matched quad upgrade for classic Fender Deluxe Reverb, Princeton, and Tweed amplifiers as well as vintage stereo hi-fi amps requiring 6V6GT / 6V6 tubes.
All four tubes have been precision tested on an Amplitrex AT1000 digital tube tester. Measured Plate Current (Ip in mA) and Mutual Conductance (uMhos) alongside percentage performance ratings relative to nominal factory reference specifications (Reference: 45.0 mA / 4,100 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:4229019 | Beam Power Tetrode | 45.0 mA | 40.8 mA | 91% | 4100 | 4300 | 105% |
| SR.NO:4229011 | Beam Power Tetrode | 45.0 mA | 46.6 mA | 104% | 4100 | 4360 | 106% |
| SR.NO:4229012 | Beam Power Tetrode | 45.0 mA | 42.0 mA | 93% | 4100 | 4320 | 105% |
| SR.NO:4229006 | Beam Power Tetrode | 45.0 mA | 42.6 mA | 95% | 4100 | 4340 | 106% |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
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