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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So I take from tubes randomly 6 tubes. 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 why he did not want to have those that datwsheet sold.

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

It was originally designed for the military to have long-life audio tube with low-microphonics, and not ddatasheet to use the lower quality EL84 radio tube for this. WIth the tubes comes a four page original printed data sheet, listing in full detail the excellent specifications of this tube, in Russian. With standard EL84, plate current ranges from an estimated 30mA to 90mA.

The tighter tolerance for plate current can be achieved with simply better adjustment of the tubes, before putting them in the glass 6p1p4.

Matching in pairs or quads in included in the price. So when you find 6 random tubes to be very strong, BUT they are all totally different, this is good, but not ideal.


This is really special. 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.

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

Hum will start at kOhm or lower. The table below is an extract from it. Actually it makes little sense, but some people pick out the center values, as if those are better.

Also vice versa, this applies. In that was sure Telefunken.

The 6P14P-EB deals with all of these problems at the same time. A similar situation we have for the Philips EL84, also a fantastic tube, but expensive. Generally it can be said, just this is the weakness of Chinese tubes. Datashee you know about tubes, you will immediately recognize the is very special.

Even so, Chinese factories make it a sport, continuously tweak the processes for using cheaper materials, and leave steps and control away. 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 see.

NOS stocks of this tube have been released for public sales only recently, and stocks are low. This picking makes little sense, but it does get a problem when stocks have been picked from multiple times.

Then you end up with tubes datwsheet have lower parameters for everyting.

This “resistor” injects a 50Hz ripple signal from the filament to the cathode. 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.


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

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. This will lead unavoidably to a wider spread in tube parameters. The longer datasheeet can be achieved by using more expensive materials.

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.

The lower microphonics are reached by using double layer mica, which gives better stability to the system. EL84 Only differences are listed here when identical, it is not listed. In terms of quality, there is one very important observation I made many times before.

So if parameters of a lot are the same, the higher expectations you can have eatasheet the base quality of that lot. So I make a distribution, and then I see immediately of some values are missing.

TDSL Tube data [6P14P (6П14П)]

A good alternative is the EI EL84, which sometimes can be found. They throw nothing away. Now, for the 6P14P-EB What is the best EL84 to buy?

If tubes of a lot appear all identical, this promises best quality. After hours they begin to wear out, and they are worth not much any more.