What's a Voskhod Sunrise 12AX7VKA about?

[bluesbear]

I see Antique Electronics has Voskhod Sunrise 12AX7's for sale. All I can find out about them is they have a larger bottle, they're made in Russia, and they're supposed to have a "rich, full tone", whatever that means. I've read Voskhod invented the 300B. Has anyone tried or heard more about these tubes?
Thanks,
Dave

[HotBluePlates]

I've read Voskhod invented the 300B. Has anyone tried or heard more about these tubes?

I'd be surprised if that were true. I'm 95% sure that Western Electric introduced the 300B.

To my limited knowledge, Voskhod is one of a number of russian tube manufacturers still in business. "Sovtek" used to be a mix of Voskhod, Ulyanov, Saratov (and probably other) tubes, which were then relabeled by a single importer/distributor.

[bluesbear]

Yeah, I read it, I didn't say I believed it. It's all advertising and not to be trusted. The idea of a larger bottle 12AX7 is intriguing, though, and I'd love to hear if someone's tried it. According to Antique Electronics, it won't fit in some sockets with a shield type base.
Thanks,
Dave

[FYL]

I see Antique Electronics has Voskhod Sunrise 12AX7's for sale. All I can find out about them is they have a larger bottle, they're made in Russia, and they're supposed to have a "rich, full tone", whatever that means.

Восход - Voskhod (Sunrise in English) is a large Russian factory located in Kaluga. Their 12AX7VKA is basically a 6N2P with a 12AX7-compatible pinout. A very nice tube when properly tested/graded.

Datasheet:
http://www.voshod-krlz.ru/spaw/uploads/files/12AX7VKA.pdf

Manufacturer's site (in Russian with a few pages in English):
http://www.voshod-krlz.ru/

I've read Voskhod invented the 300B.

Western Electric did. The 300B was launched in 1938 and was manufactured 'til 1988...

[jojokeo]

I see Antique Electronics has Voskhod Sunrise 12AX7's for sale. All I can find out about them is they have a larger bottle, they're made in Russia, and they're supposed to have a "rich, full tone", whatever that means.

Nice info FYL. This seems like it should sound nice but it looks a little like an EH/Sovtek?

When I first read "Voskhod Sunrise" it immediately had me thinking of a Russian version of a Tequilla Sunrise (Vodka Sunrise).

[FYL]

This seems like it should sound nice but it looks a little like an EH/Sovtek?

EH/Sovtek are also re-marketers, if most of their tubes come from Saratov, a number of them are produced by Voskhod - their octal small signal tubes for instance - and others. And all use the same Soviet era designed components such as plates or glass envelopes.

[Tone Junkie]

But has anyone actually tried it, I have seen it and thought about it myself , next time I order from them I will have to try one.
Thanks Bill

[bluesbear]

I talked to them at Antique Electronics this morning. They really don't know anything about it yet, other than they were told "It's a good tube." If I get around to ordering a couple, I'l report.
Dave

[Tone Junkie]

I will to next time I order.
Bill

[Jack1962]

I have a Fender Bronco on my bench right now with these Voskhod 12AX7VKA tubes in it , they do have a very rich tone , fitting then into a shielded socket is a bit of a challenge though. I checked Antique Electronics just a few seconds ago they don't list them that's a shame I would like to do some more tone testing on these.

[EL34]

It looks just like the Sovtek 12AX7's I sell here
http://hoffmanamps.com/MyStore/catalog/parts11.htm

[Jack1962]

After testing it it sounds just like a Sovtek too , it is a very tight fit into a shielded socket though.