6P14P-EV's

[David Root]

Slightly off-topic but given the price of NOS EL34 these days, is there a Sovietski "equivalent" that is worth trying?

I know some of these tubes are not all that exact duplicates of what they are sold as, to say the least.

[tubeswell]

I did a quick google and came up with nuthin. You could try looking individually through the 6.3V filament pentodes in this list and see if there is something with similar plate, screen, and bias voltages, and transconductance

http://www.russiantubes.com/tubes.php?r=12

Otherwise look through Frank's pages for something similar

http://www.tubedata.org/

[FYL]

Slightly off-topic but given the price of NOS EL34 these days, is there a Sovietski "equivalent" that is worth trying?

Nope. The EL34 wasn't rugged enough for our Soviet friends, they didn't bother to copy it. When they needed some they just got them from Eastern German or Polish factories producing them under a Philips license.

[VacuumVoodoo]

You can try to locate a 6P27S tube. (I haven't been successful yet, other than finding a few photos). They only made less than 1000 of them in the 1970s. Even though it 's a beam tetrode it has characteristics very similar to EL34.
Original data sheet: http://klausmobile.narod.ru/td/data/_6p27s.GIF

[IMG:800:600]http://i26.photobucket.com/albums/c149/ ... 00y554.jpg[/img]

[FYL]

I did a quick google and came up with nuthin.

Here's a .rar archive of 30 pages of original Russian data on the 6P14P family. Data comes in djvu format - a pdf would be 15 times larger. Freeware readers are available for all platforms.

OK, there's no benefit at raring a djvu, but the board doesn't accept unknown file formats.

[FYL]

Even though it 's a beam tetrode it has characteristics very similar to EL34.

Closer to the 6P3S family IMO when it comes to curves.