RARE NOS FOTON TROPHY 6N6P 6H6N MATCHED PAIR GOLD GRID TUBES Schiit Valhalla 2

Description

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TUBE
MUSEUM NEW YORK
SAME DAY SHIPPING!
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THE "BEST 6N6P EVER MADE!"
RARE NOS TROPHY-QUALITY
FOTON < > 6N6P
HAND
MATCHED PAIR
Foton, Tashkent, KAZAKHSTAN
with
GOLD
GRID-POSTS
"NIB TROPHY QUALITY"
1960's dates
Military Version
With
STAR
and
B
< 82nd > Separate Tank
B
attalions
markings on each tube
<6N6P> MARKINGS IN FOTON LOGO
RARE NOS TROPHY-QUALITY
NOS ORIGINAL PACKED INDIVIDUAL PAPER BOXES.
Picture is of one of the pairs, as this is a multiple-listing of many pairs for offer.
AMPLITREX MATCHED PAIR
RUSSIAN MILITARY 6N6P with "OTK" codes.
These tubes were manufactured by the FOTON, Russia Military Factory.
"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.
ACTUAL PICTURE AND VISUAL RESULTS DISPLAY OF PAIR #1
PAIR # 1:
(SOLD!)
tube 1:
27.6mA / 26.2mA
11,800 GM(105%) / 11,800 GM(105%)
code XII = 1966
tube 2:
26.4mA / 26.2mA
11,400 GM(101%) / 11,400 GM(101%)
code XII = 1966
PAIR # 2:
(AVAILABLE!)
tube 1:
27.4mA / 26.2mA
12,000 GM(107%) / 11,600 GM(103%)
code XII = 1966
tube 2:
26.0mA / 25.2mA
11,300 GM(101%) / 11,200 GM(100%)
code XII = 1966
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.
E
xcellent as a driver for power tubes like 845, 300B, or 6C33C.
<6N6P> MARKINGS IN FOTON <> LOGO
BAT gear 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."...
Name
6N6P or
6H6(Pi)
cyrillic
Application
application in special audio equipment for military
Cathode type
indirect heating military-grade oxide
Envelope
crystal composite glass capable of
extreme temp. fluctuations.
Mass,G's
20
Filament voltage
6.3 V
Filament current
0.85-0.95 ampere
units of electric current equal to a flow of one coulomb per second.
Anode voltage
120 Volts
Anode current
0.02-0.04 ampere
Anode power,W
4.8
Grid1 voltage
minus 2 volts
Steepness in mA/V
8,100-13,600 mA/V (GM)
Reverse grid current, uA
0.5
Microphonic noise in mV
100
Gain
16.0 - 24.0
Socket type
9-pin NOVAL
CERTIFIED
LOW-NOISE MUSEUM SPECIMENS
TubeMuseum tested tubes
takes the guesswork out of the process of selection delivering you the best Audio tubes that possibly can be.
Terms of Auction
NOS NEW IN ORIGINAL BOX 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 CONFIRMATION
TUBE
MUSEUM NEW YORK
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