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Seller Store tubes_old70
(373) 100%,

Location: Bucharest
Ships to: US,
Item: 313401818046

Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:14 Days
Refund will be given as:Money Back
Reflektor:Reflektor
Type:NOS Tube
2J27L:2J27L
Country/Region of Manufacture:Russian Federation

Price is for a matched quad of 2J27L soviet NOS/NIB, 4 tubes with same or very close electrical parameters, from 1986, max. 1% spread plate current and transconductance.2J27L=2Ж27Л (russian letters, cyrillic script)Tested on RoetestV10 professional tube testing system, very good results for currents, transconductance, vacuum etc., see examples of results in photos.Results seen in photos are examples, not all quads have same parameters but all are in factory datasheet range: 1.3 – 2.5mA for plate current and 1-1.5mA/V for transconductance but for this selection we removed weak tubes and gassy tubes, even a little gassy that are pretty good tubes.From our experience (tested few thousands) for this kind of tubes about 25% from them are under 1.7 mA plate current, not bad tubes but not good enough for this selection. 2J27L is is a direct heating tube, designated as RF/IF stage pentode but works excellent in audio, is quiet and non-microphonic, low distortions, very good linearity in the highest part of curve. Very low heater consumption, only 125mW (for EF86 consumption is 10 time higher).Condition for test, as seen in test protocol: 2.2V/120V/45V/0V, typical expected results (100%) 1.9mA / 1.25mA/V. 2J27L is known as an equivalent – but not direct replacement – with 12J1L, 4J1L, RV12P2000. Any replacement between mentioned tubes must be done taking care of base/pin connection, heater type and heater voltage.Beside the matched quads available we have selected 2 matched octetes (one 106% and one 104%) and a set of 12 tubes all matched 102%, if someone buys 2 quad will receive a matched octet or the set of 12 tubes match if buys 3 quads.Also we sell very cheap 2J27L not tested, see our other listings or ask, but testing hundreds of tubes and selecting the powerful ones matched needs some time and work that of course is added to the price.Tested with Roetest V10, “the Rolls Royce of tube testers” [emissionlab quote], a wonderful german professional system for testing tubes, it shows everything about a tube. Just ask if you need more details, we’ll answer fast. We send next day after payment, priority airmail with tracking number. Please be patient with shipping time that can be surprisingly fast or disappointingly slow, depends only by post services. Average shipping time is 10 days +/- 5 days for US and Europe. To east coast US is faster, for west coast sometime an USPS logistic hub keep a parcel 5-10 days.

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