Visit this seller's eBay Store! 
Member has an eBay Store TubeMuseum

Visit this seller's eBay Store!

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 (first klystron tube). Welcome to the ...
Member has an eBay Store TubeMuseum


Buyer: robb5125 (21)

FeedbackFromWhen
Positive feedback ratingGreat seller, tubes exactly as described. Thanks! A+++Buyer
  
During past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)

Positive feedback ratingFast shipping! Excellent and great sounding tubes!Buyer
  
During past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)

 FeedbackFromWhen
Positive feedback rating!00% good experience.BuyerDuring past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)

 FeedbackFromWhen
Positive feedback ratingGood Description, Price, Shipping, RecommendedBuyerDuring past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)


6N6P 
NOS 1974' 
MATCHED QUAD!
with GOLD GRID-POSTS
RUSSIAN MILITARY RED-TIP
BID 1 FOR THE MATCHED QUAD!
BID 2 FOR THE MATCHED OCTET!

VERY LIMITED AVAILABILITY DUE TO UKRAINE / RUSSIAN SANCTIONS CRISIS U.S. IMPORT BAN, AND SUPPLY-CHAIN DISRUPTIONS.
NOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.



1974 NOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.



ALL ARE 1974 MILITARY STOCK
BID 1 FOR THE MATCHED QUAD!
BID 2 FOR THE MATCHED OCTET!

QUAD # 1 (SOLD!) WOW!

(28.0mA and 11,200 mA/V = 100%)
* example 36.0 = 128%, example 1,260 = 112%

QUAD # 2 (SOLD!) WOW!

(28.0mA and 11,200 mA/V = 100%)
* example 36.0 = 128%, example 1,260 = 112%

QUAD # 3 (AVAILABLE) WOW!
32.0/30.4mA & 12,000/11,900 mA/V
32.2/31.2mA & 11,800/11,600 mA/V
32.8/31.6mA & 11,900/11,450 mA/V
32.4/30.5mA & 11,800/11,400 mA/V
(28.0mA and 11,200 mA/V = 100%)
* example 32.0 = 116%, 11,800 = 105%

BID 1 FOR THE MATCHED QUAD!
BID 2 FOR THE MATCHED OCTET!

VERY RARE FOR IMMEDIATE USA DELIVERY 
NOS RUSSIAN MILITARY RED-TIPS 
NOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.

NOS 1974 MATCHED QUAD
Forty-Eight (48) Year Old NOS



NOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.

NOS NEW, MILITARY EQUIPMENT 6N6P

These tubes were manufactured by the NEVZ, Novosibirsk, Russia Military Factory.

These specimens are the "Best of the Best" selected for matched mA & GM within the QUAD.

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.

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."...




CHOOSE WISELY!
IN A WAY THAT SHOWS EXPERIENCE, KNOWLEDGE, AND GOOD JUDGEMENT.
Question? Which Version Should I Buy? 6N6P or 6N6P-I
Choose 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.

Read here:

....."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.)

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 there possibly can be.   


ACTUAL  POSITIVE-FEEDBACK Positive feedback rating ABOUT THESE TUBES:


FeedbackFromWhen
Positive feedback ratingAs described, promptly shipped. A+++++Buyer
 
During past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)

FeedbackFromWhen
Positive feedback ratingReceived very quickly extremely well packaged. Tubes exactly as shown.
  
During past month
 6N6P 6H6N Amplitrex Matched PAIR w/ GOLD GRID-POSTS two tubes for BAT Tenor 75wi (#291771739118)

Terms of Auction

BID 1 FOR THE MATCHED QUAD!

BID 2 FOR THE MATCHED OCTET!

NO ZERO (0) FEEDBACK BUYERS WITHOUT PRIOR PERMISSION, including confirming MAKE & MODEL NUMBER of preamp.

VERY RARE FOR IMMEDIATE USA DELIVERY NOS RUSSIAN MILITARY RED-TIPS 

NOS from 100 BULK RUSSIAN MILITARY MASTER CASE. NO INDIVIDUAL PAPER BOXES.

VERY LIMITED AVAILABILITY DUE TO UKRAINE / RUSSIAN SANCTIONS CRISIS U.S. IMPORT BAN, AND SUPPLY-CHAIN DISRUPTIONS.

We do not low declare customs amount and we insure for full value.

International Buyers - Please note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

International Shipping - items may be subject to 

-  Customs processing depending on the item's declared value.
- Sellers set the item's declared value and must comply with customs declaration laws.

- import duties and taxes which buyers must pay.


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 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.

NO ZERO (0) FEEDBACK BUYERS WITHOUT PRIOR PERMISSION, including confirming MAKE & MODEL NUMBER of preamp.

THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATION

No zero (0) status bidders without permission, or we reserve the right to cancel your bid. Buyer is responsible for all import duties at price paid for item(s).


TUBEMUSEUM NEW YORK

NOTICE: 

All text & images © 2002-2022 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. All photographs and text appearing in the Tube Museum New York (TubeMuseumUSA) site(s) are the exclusive property of The Tube Museum New York © (except where stated otherwise) and are protected under international copyright laws and treaties. They are made available for your personal viewing enjoyment only. No images or unique text are within the Public Domain. The photographs and text may not be copied, reproduced, redistributed, manipulated, projected, used, or altered in any way without the prior express written permission of The Tube Museum New York ©.


The unauthorized reproduction or distribution of a copyrighted work, pictures, and text is illegal. Criminal copyright infringement, including infringement without monetary gain, is investigated by eBay and appropriate action will be taken. Make sure your listing follows these guidelines. If it doesn't, it may be removed, and you may be subject to a range of other actions, including limits of your buying and selling privileges and suspension of your account. If you're not using pictures or text from the eBay product catalog, you should use your own when creating a listing. If you're using someone else's photos and text, make sure you have permission from the rights owner or creator.