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

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

A similar situation we have for the Philips EL84, also a fantastic tube, but expensive. NOS stocks of this tube have been released for public sales only recently, and stocks are low.

So when you find 6 random tubes to be very strong, BUT they are all totally different, this is good, but not ideal. Then you end up with tubes that have lower parameters for everyting. Others pick out the higher DC current values as 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 datashewt.

Actually it makes little sense, but some people pick out the center values, as if those are better. This tube used to be very expensive when it was made! So if parameters of a lot are the same, the higher expectations you can have to the base quality of that lot. So I take from tubes randomly 6 tubes. This will lead unavoidably to a wider spread in tube parameters. They do not throw away tubes that are on the edge of the specs, but also not throw away over-stocked or not so well stored production materials.


What is the best EL84 to buy? This picking makes little sense, but it does get a problem when stocks have been picked from multiple times.

The table below is an 6pp14p from it. After hours they begin to wear out, and they are worth not much any more. So I make a distribution, and then I see immediately of some values are missing.

Like a box of getters was in contact with air too long, etc. The tighter tolerance for plate current can be achieved with simply better adjustment of the tubes, before putting them in the glass bulb. 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. EL84 Only differences are listed here when identical, it is not listed.

Even so, Chinese factories make it a sport, continuously tweak the processes for 6p114p cheaper materials, and leave steps and control away. This is really special. 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. This adds to the input signal and will be amplified by the tube.

Main thing, the tubes work, and if it goes wrong we replace them, they say. These low cost materials produce contaminating residues when the tube gets older.

It was never before available for commercial use. Hum will start at kOhm or lower. Or better said, not use lower cost materials, datassheet which the low cost EL84 is made of.

Also vice versa, this applies. Also you can see if somebody picked out specific values, it’s not satasheet a bad lot, but you can never say why he wanted to have those that he picked out, and why he 6p1p4 not want to have those that he sold. The longer lifetime can be achieved by using more expensive materials. Generally it can be said, just this is the weakness of Chinese tubes. If tubes of a lot appear all identical, this promises best quality.


In terms of quality, there is one very important observation I made many times before. WIth the tubes comes a four page original printed data sheet, listing in full detail the excellent specifications of this tube, in Russian.

They throw nothing away. Only differences are listed here when identical, it is datashet listed. The lower microphonics are reached by using double 61p4p mica, which gives better stability to the system. The 6P14P-EB deals with all of these problems at the same time.

electron Tube Data sheets – 6

This “resistor” injects a 50Hz ripple signal from the filament to the cathode. Now, for the 6P14P-EB A good alternative is the EI EL84, which sometimes can be found. It was originally designed for the military to have long-life audio tube with low-microphonics, and not having to use the lower quality EL84 radio tube for this. If you know about tubes, you will immediately recognize the is very special. 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.

In that was sure Telefunken. Matching in pairs or quads in included in the price.