[Oskari]

There is no symbol that I can see, except for the rhombus and OTK symbol.

There could be a small symbol between the numbers of the date.

 

[ThurstonX]

There is no symbol that I can see, except for the rhombus and OTK symbol.

Probably(?) Foton, then, esp. if the tube type is inside the rhombus. Do you have a pic with the symbol? Ah, I see the type printed there. No clue base on that photo.

https://www.google.com/search?q=Fot...357ZAhUBmuAKHVOGA1AQ_AUICigB&biw=1712&bih=925

All my Fotons are like that. My 1966 Foton 6N3Ps are fantastic. 6N8S (6SN7 equiv.) are pretty good, too, esp. for the money.

 

[TK16]

No symbol, but words written in Russian under the date code, should see it in the pic.

 

[TK16]

Probably(?) Foton, then, esp. if the tube type is inside the rhombus. Do you have a pic with the symbol? Ah, I see the type printed there. No clue base on that photo.

https://www.google.com/search?q=Fot...357ZAhUBmuAKHVOGA1AQ_AUICigB&biw=1712&bih=925

All my Fotons are like that. My 1966 Foton 6N3Ps are fantastic. 6N8S (6SN7 equiv.) are pretty good, too, esp. for the money.[/QUOTE
From the ebay ad.

 

[Oskari]

No symbol, but words written in Russian under the date code, should see it in the pic.

That means something like made in USSR.

Yes, the rhombus could be the factory code…

 

[Oskari]

And no symbol on that piece of paper?

 

[winders]

But I would say others may have different preferences in sound from their tubes than you do from yours. That however does not make your preference right and theirs wrong.

You could use that argument to suggest that crap tubes that Schiit supplies with their headphone amps are actually good tubes. Sorry, but the consensus is that the Voshkod Rockets are not great tubes and certainly not better than the '74 or '75 Reflektors. Just because one person disagrees does not make the Voshkods great tubes all of a sudden. But you certainly are free to live in your kumbaya world where every tube is great to someone....

 

[ThurstonX]

Here's a handy site for Soviet-era tubes, complete with drop down menu with the various factories:

http://www.rutubes.com/category/foton-tube-tashkent-kazakhstan/

Well, pretty meh in the end.

 

[koover]

You could use that argument to suggest that crap tubes that Schiit supplies with their headphone amps are actually good tubes. Sorry, but the consensus is that the Voshkod Rockets are not great tubes and certainly not better than the '74 or '75 Reflektors. Just because one person disagrees does not make the Voshkods great tubes all of a sudden. But you certainly are free to live in your kumbaya world where every tube is great to someone....

I don't get you dude. 1 minute I really like you and value what you have to say, then this? But you certainly are free to live in your kumbaya world where every tube is great to someone....
It's like you have the biggest chip on your shoulder and it's the world according to winders.

 

[TK16]

And no symbol on that piece of paper?

All the tubes have a 3 in the rhombus, 3 have OTK8, 1 OTK6.
Sheet looks like a spec sheet for the tube with no symbols.

 

[rnros]

There is no symbol that I can see, except for the rhombus and OTK symbol.

Have seen those before, not sure if I actually have any here, but no symbol, only the script below the date.
Maybe that's the brand identifier instead of the usual logo?
Don't think they are Reflector or Oktyabr, at least the construction details do not match the RFL or OKT I've seen.

 

[rnros]

Probably(?) Foton, then, esp. if the tube type is inside the rhombus. Do you have a pic with the symbol? Ah, I see the type printed there. No clue base on that photo.

https://www.google.com/search?q=Fot...357ZAhUBmuAKHVOGA1AQ_AUICigB&biw=1712&bih=925

All my Fotons are like that. My 1966 Foton 6N3Ps are fantastic. 6N8S (6SN7 equiv.) are pretty good, too, esp. for the money.

True that Foton uses the rhombus, but the rhombus is also used as a military inspection stamp, usually with a number inside, and randomly placed.

 

[ThurstonX]

True that Foton uses the rhombus, but the rhombus is also used as a military inspection stamp, usually with a number inside, and randomly placed.

Yes, that can be confusing. I did what I could to clarify

 

[AuditoryCanvas]

All the tubes have a 3 in the rhombus, 3 have OTK8, 1 OTK6.
Sheet looks like a spec sheet for the tube with no symbols.

I have a few pairs of them, same year, they're unbranded, probably for military export. I posted about them as my first post in this thread last year. They're the exact same internally as the '75 Oktyabr I have. The spec sheet is the same too.

 

[TK16]

You probably got them from the same seller, $5 a pair? They are quite good though shiping made them $22 for 2 pair.