Hello – I have a matched quad of Sylvania JAN mil-spec long plate 6189 12AU7 ECC82 tubes for sale. These are NOS and new in the box.
JAN stands for "Joint Army Navy" and is the designation that the US military uses to describe tubes made to military specifications. The military specs are compatible with commercial production in many ways, with more testing, and tighter control of tolerances.
These tubes have long (17 mm) gray plates, halo getters and matching 1968 date codes.
TV-7/B test results: 100/100, 100/100, 100/100 and 100/100. Minimum is 56.
They have also been checked for noise and microphonics in the phono stage of my DIY pre-amp and are dead quiet.
All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice – prior to the listing and prior to shipping.
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I will ship international.
Free shipping in the USA. Canadian shipping is $15.00 and international shipping by first class is $18.00.
Your tubes will be carefully packed.
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