Stock) Russian 6P14P-EV as translated from Cyrillic. It is a military build that meets or exceeds the USA made specifications. Preferred Series tubes. Name, 6P14P. Type, Output pentode. Application, LF power amplification. Cathode type, oxide,indirect heating. Envelope, glass,miniature. Mass,g, Filament. 6P14P (6П14П) Pinout. No information available. 6P14P (6П14П) Substitutes. No information available. 6P14P (6П14П) Ratings. No information available.

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They do not throw datashdet tubes that are on the edge of the specs, but also not throw away over-stocked or not so well stored production materials. This will lead unavoidably to a wider spread in tube parameters. This “resistor” injects a 50Hz ripple signal from the filament to the cathode.

6П14П, Tube 6П14П; Röhre 6П14П ID, Vacuum Pentode

Also vice versa, this applies. WIth the tubes comes a four page original printed datasbeet sheet, listing in full detail the excellent specifications of this tube, in Russian. In terms of quality, there is one very important observation I made many times before. So when you find 6 random tubes to be very strong, BUT they are all totally different, this is good, but not ideal.

It was originally designed for the military to have long-life audio datashee with low-microphonics, and not having to use the lower quality EL84 radio tube for this. This adds to the input signal and will be amplified by the tube. Hum will start at kOhm or lower. Main thing, the tubes work, and if it goes wrong we replace them, they say. Then you end up with tubes that have lower parameters for everyting. They throw nothing away.

6P14P | Tubes Information

So I take from tubes randomly 6 tubes. Or better said, not use lower cost materials, of which the low cost EL84 is made of. So whatever the situation, I prefer such lots that have not been picked from. This lot may have lower lifetime, and problem rate is highter. The tighter tolerance for plate current can be achieved with simply better adjustment of the tubes, before putting them in the glass bulb.

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Like a box of getters was in contact with air too 614p, etc. So if parameters of a lot are the same, the higher expectations you can have to the base quality of that lot. NOS stocks 6p4p this tube have been released for public sales only recently, and stocks are low.

Also you can see if somebody picked out specific values, it’s not necesarily a bad lot, but you can never say why he wanted to have those that he picked out, and vatasheet he did not want to have those that he sold. This tube used to be very expensive when it was made! The longer lifetime can be achieved by using more expensive materials. A similar situation we have for the Philips EL84, also a fantastic tube, but expensive.

The standard EL84 has actually not a very high lifetime, it can be microphonic, and is produced with an almost unacceptable wide range of plate current. The lower microphonics are reached by using dataaheet layer datsheet, which gives better stability to the system.

It was never before available for commercial use. These low cost materials produce contaminating residues when the tube gets older.

If tubes of a lot appear all identical, this promises best quality. What is the best EL84 to buy? Actually it makes little sense, but some people pick out the center values, as if those are better.

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Others pick out the higher DC current values 6p114p if those are better, and if somebody has a Hickok tester, he’ll pick out those with higher transconductance as that’s all he can see. In that was sure Telefunken.

Index of /images/eBay/eBay_De/OROSZ csovek/= Datasheets/6P14P

So I make a distribution, and then I see immediately of some values are missing. Matching in pairs or quads in included in the price.

Even so, Chinese factories make it a sport, continuously tweak the processes for using cheaper materials, and leave steps and control away. Now, for the 6P14P-EB This is really special.

6P14P-EV = EL84 = 7189 = 6BQ5 tube. Output pentode

This picking makes little sense, but it does get a problem when stocks have been picked from multiple times. After hours they begin to wear out, and they are worth not much any more. Perhaps not many of the readers had the chance to compare lots pcs original packed NOS tubes with each other, or compare such lots with pcs of new made tubes. Generally it can be said, just this is the weakness of Chinese tubes. The 6P14P-EB deals with all of these problems at the same time. The table below is an extract from it.

If you know about tubes, you will immediately recognize the is very special. EL84 Only differences are listed here when identical, it is not listed. Only differences are listed here when identical, it is not listed.

A good alternative is the EI EL84, which sometimes can be found.

With standard EL84, plate current ranges from an estimated 30mA to 90mA.