1963 RARE SOVIET "OTK" FOTON 6N6P 6H6N MATCHED PAIR GOLD GRID SQUARE-GETTERS NOS

Description: Historic TubeMuseum, Tuxedo Park, New York Established in 1928 as a premier research facility in Tuxedo Park, New York, that attracted such brilliant and most visionary minds of the twentieth century - Albert Einstein, Werner Heisenberg, James Franck, Niels Bohr and Enrico Fermi to name a few. The Tuxedo Park lab attracted these top-flight scientists who experimented with audio, sound, time measurement, and radar waves. He turned this Tuxedo Park laboratory into a meeting place for the most visionary minds of the twentieth century; Albert Einstein, and the aforementioned scientists. Today this location is the home of The Tube Museum New York. ( featured on Wikipedia® )Welcome to ...Visit this seller's eBay Store! TUBEMUSEUM NEW YORK FeedbackFromWhenPerfect interaction. Product rare and wonderful.Buyer: TR6444 During past month RARE FOTON 6N6P 6H6N Amplitrex Matched PAIR GOLD GRID-POSTS (#292042185071) Fast shipping! Excellent and great sounding tubes!Buyer: krsmi During past month 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes (#291771739118) FeedbackFromWhen!00% good experience.Buyer: tr6444During past month 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes (#291771739118) FeedbackFromWhenGood Description, Price, Shipping, RecommendedBuyer: evasch During past month 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes (#291771739118) 1963 MATCHED PAIRVERY LIMITED AVAILABILITY DUE TO UKRAINE / RUSSIAN SANCTIONS CRISIS U.S. IMPORT BAN, AND SUPPLY-CHAIN DISRUPTIONS.FOTON < > 6N6P Foton, Tashkent, KAZAKHSTANwith GOLD GRID-POSTS 1963 datesOTK Military VersionNOS from 100 BULK RUSSIAN MILITARY MASTER CASE.Picture is of one of the pairs, as this is a multiple-listing of many pairs for offer. Print and variations in the numbers and codes may vary.AMPLITREX MATCHED PAIR RUSSIAN MILITARY 6N6P with "OTK" codes. These tubes were manufactured by the FOTON, Russia Military Factory in 1963 VERY LIMITED AVAILABILITY DUE TO UKRAINE / RUSSIAN SANCTIONS CRISIS U.S. IMPORT BAN, AND SUPPLY-CHAIN DISRUPTIONS. "Foton" specialized in the design and manufacture of electronic equipment for use in electronic equipment for various purposes. The company is the largest manufacturer of electronic equipment in Uzbekistan and one of the largest in the USSR.Plant "Foton" was created in 1941 on the basis evacuated plant electronic devices from Fryazino, Moscow region. Since 1942, the plant began production in Tashkent - electronic generator and amplifier tubes.In 1964, the technology company has been totally redesigned . The company was to develop semiconductors (diodes, transistors), and subsequently integrated circuits. Virtually all developed semiconductor devices and integrated circuits have been mastered and mass produced (some of them serially produced and currently ) of inc." Foton" and by the "Integrator".In several areas of scientific and production activity, the company was in the lead industry. The main thrust of development - semiconductors and integrated circuits for machinery.The enterprise had its own production, intended for the production of pilot batches of developed products, as well as for the production of the most complex products.After 1991, the need for development declined sharply. In these circumstances, the emphasis was placed on the production side of the business. Since 1994, maintaining the previous specialization transitioning production to electronic and electronic products with a complete production cycle. While commercial production of electronic cash registers, black-and-white and color televisions, energy saving lamps, transformers, diode cascade.In December 1995, the company was transformed into a corporation. PAIR 1: (SOLD!) PAIR 2: (SOLD!) PAIR 3: (AVAILABLE!) MATCHED PAIR #3 AMPLITREX AT-1000 TESTED @ tube 1: 11,400 GM (102%) / 11,400 GM(102%) tube 2: 11,400 GM (102%) / 11,200 GM(100%) PAIR 4: (AVAILABLE!) MATCHED PAIR #4 AMPLITREX AT-1000 TESTED @tube 1: 11,960 GM (106%) / 11,400 GM(102%) tube 2: 11,800 GM( 105%) / 11,200 GM(100%) These specimens are the "Best of the Best" selected for matched mA & GM within the pair.Most bargin-priced 6N6P tubes we see suffer from Heater-to-Cathode Leaks, so you get what you pay for. We have weeded-out any tubes with H-to-K leaks.There is no "real" substitute, not ECC99 and not E182CC! Close but not identical.Unique in their electrical design they share no replacement tube in the US or European numbering system. Excellent as a driver for power tubes like 845, 300B, or 6C33C.Users should immediately give 6N6P a try without any other circuit modifications. You will be surprised in the improvement in sound. ..."I am starting to wrap up my own power tube testing on my Little Dot LD MkII. It took me some time since the tube was so clear sounding with the gold grid 6N6P tube. ..."The gold grid 6N6P power tube is punchier and more dynamic sounding than my standard Russian 6N6P tube. Both have good tonal range. The standard OTK 5 Russian 6N6P tube is a more relaxed and just a bit softer sounding tube than the gold grid Russian 6N6P. Both tubes are good, but the gold grid 6N6P tubes are hard to find. Both power tubes have great synergy with the EF91 CV4014 driver tube.On the other hand, the Sovtek 6H30 power tube is awful sounding. It was very thin sounding and had very little bass compared to the previous two tubes that I mentioned above. The EF91 GEC tube, which is just a bit brighter from neutral, just makes matters worse with the Sovtek 6H30. The synergy was not there."... rare 1963 square getter cupCHOOSE WISELY! IN A WAY THAT SHOWS EXPERIENCE, KNOWLEDGE, AND GOOD JUDGEMENT.Most all bargin-priced 6N6P tubes we see suffer from Heater-to-Cathode Leaks! Ouch!Question? Which Version Should I Buy? 6N6P or 6N6P-IChoose Wisely with our 6N6P, and not the I-version.The 6N6P-I is a Bad choice because they are NOT made for audio and only have a 500 hour life. The ones you get from us, (plain 6N6P) ARE made only for Audio, and have a 2000 hour life......"I" version is for pulse operation - and also it is 500 hours variation of the tube.... the one without the "I" is the one that can be used 2000 hours....it seems that "I" one is no good for me.... to bad.... i will play with it when i catch the time - to see if those two will be good in line... and in future i will try to find only plain 6N6P versions..........The I variant is for impulse operation so it's curves indicate positive grid voltages. Because of this it is also not tested for microphonics and noise as these parameters are of no importance for audio .... ( they are made as a pulse tube, and not tested at the factory for noise, because they are not made for audio.) Name6N6P or 6H6(Pi) cyrillicApplicationapplication in special audio equipment for militaryCathode typeindirect heating military-grade oxideEnvelopecrystal composite glass capable of extreme temp. fluctuations.Mass,G's20Filament voltage6.3 VFilament current0.85-0.95 ampere units of electric current equal to a flow of one coulomb per second.Anode voltage120 VoltsAnode current0.02-0.04 ampereAnode power,W4.8Grid1 voltageminus 2 voltsSteepness in mA/V8,100-13,600 mA/V (GM)Reverse grid current, uA0.5Microphonic noise in mV100Gain16.0 - 24.0Socket type9-pin NOVAL CERTIFIED LOW-NOISE MUSEUM SPECIMENSTubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be. ACTUAL POSITIVE-FEEDBACK ABOUT THESE TUBES: FeedbackFromWhenAs described, promptly shipped. A+++++Buyer During past month 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes(#291771739118) FeedbackFromWhenReceived very quickly extremely well packaged. Tubes exactly as shown.Buyer During past month 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes (#291771739118) Terms of AuctionNOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.Per eBay's terms of service which every eBay account holder must agree to as part of being an eBay member, a bid is a legally binding contract. Please read the Terms & Conditions carefully before bidding. By bidding on this auction, you understand and agree to eBay's terms of service as well as all terms and conditions mentioned here.Buyer pays all shipping, Item must be in original condition including cosmetic lettering on tubes so handle with white-glove care, un-used with all original boxes, packing material, environmentally safe cornstarch pellets, and shipping box. Absolutely NO RETURNS on special orders or best-offer deals. All sales are final with NO RETURNS on self installed mic tubes.All exchanges must be pre-paid and returned in original packing, complete with no sign of wear or abuse, exactly the same condition as it was when you received it. In the event that the product is not in the same condition, and does not test the same as you received it, you will be subject to a refusal and return, a determined restocking fee, repair charge, or disqualification. RETURN AUTHORIZATION (RA) number and instructions is required before sending any items. Shipping and handling charges are non-refundable. We do not guarantee that your tester, or your tester's measurements will be the same as the Amplitrex AT-1000. Older testers, different testers, or the same tester may report different test measurements, and may not measure the same tube meaningfully (due to current dependency), accurately (due to calibration difficulties) or consistently (due to internal circuit drift) There is no warranty or returns based on what any other tube tester reports. THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATIONADD JUST $3.99 FOR USPS PRIORITY MAIL 2-DAY IN USA!"EXPRESS SHIPPING" required for certain countries, (Russia, Indonesia, Italy, Australia, check first before you bid or we reserve the right to cancel your bid) TUBEMUSEUM NEW YORKNOTICE: All text & images © 2002-2023 Copyright © of The Tube Museum New York ©All Rights Reserved By entering this site you are agreeing to be bound by the terms of this agreement. 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Price: 159.96 USD

Location: Bradenton, Florida

End Time: 2024-01-05T17:08:35.000Z

Shipping Cost: 7.99 USD