6P14P / EL84M / 6BQ5 MATCHED PAIR ( 0-2% tol.) NOS/OTK Tubes From 1983!

Description: 6P14P / EL84M / 6BQ5 MATCHED PAIR ( 0-2% tol.) NOS/OTK SAME DATA 1983 Military equipment,"OTK", high reliability. The tubes are never used. Old stock.Made in "REFLECTOR" PlantThis tubes were tested on high end russian military tube tester L1-3 by a qualified engineer!6P14P is an aexcellent tube to use in audio amplifiers, direct replacement with EL84, EL84M, 6BQ5 etc. Each tube is heated for at least 30 minutes, listened in an amplifier with plate current monitoring and a 1 kHz oscilloscope view of a sine wave. After that each tube is tested using L1-3 or L3-3 tube tester, first for shorts, leakage heater-cathode and Ig1 no more than 0.1 micoA and then are meaured plate current and transconductance. The sorting of tubes in pairs or quads is done taking into account both the anode and the transconductance. For example, in a pair of 0% both tubes have exactly the same anode current and the same transconductance at the test conditions: Up=256V, Ug2=256V, Uh=6.3V, cathode biasing. Gold Logo. Gilded first Grid, the tube contains 7.494 mg of gold (see datasheet). Please allow for the following shipping times:EU countries: 5-8 business days, on rare occasions a few days more USA: 10-15 business days, on rare occasions more South East Asia (Japan, Singapore, S. Korea, Hong Kong, Taiwan etc) 10 business days, on rare occasions more India, China, Russia, Kazakhstan, Pakistan, Indonesia, Malaysia, Thailand, Australia, South Africa etc: at least 15 business days, but frequently around 25 business days Please note that shipping cost is calculated at average. If you have any objections please contact me for a specific quotation.

Price: 24 USD

Location: Bucharest, default

End Time: 2024-12-06T18:40:44.000Z

Shipping Cost: 13.8 USD