Schiit Valhalla Tube Rolling thread.

[Oskari]

  Let me know if you would lie to see the corresponding symbols, they can be useful for identification (those funny line symbols on USSR tubes.

 
What did you have in mind here, Nic?

 

[Nic Rhodes]

Any thoughts on the 6H30N-EB(cryo-treated)?

 
Generally just a bit better than the 6N6Ps but certainly not nearly as good as the 6N30P DR variant. None too excited by the cryo treated valves in general but have not tried that one specifically. If you want to try these look for the older examples. The Valhalla seems to work well on good standard 6N1P and 6N6Ps where as Lyr need better tubes to really shine. Out of interest if you look around at 6N1Ps you will find examples from:
 
Voskhod, Kaluga
Nevz, Novosibirsk
Orzep, Orel
Foton, Tashkent
October, Vinnitsa
Anode, Diatkovo
 
and these are made in 6N1P, 6N1P Vi and 6N1P EV variants so plenty of rolling choice there that most do not realise. No night and day differences but fun.
 
Thanks Oskari, I have updated my info I thought there would be a few errors.

 

[Nic Rhodes]

   
What did you have in mind here, Nic?

 
I have a one pager I have gathered with symbols (over the years) and names that I find useful which I could post if people were interested.

 

[Oskari]

  I have a one pager I have gathered with symbols (over the years) and names that I find useful which I could post if people were interested.

 
Absolutely.

 

[Nic Rhodes]

Anyone know how to attach a .doc or .pdf?

 

[Nic Rhodes]

 

[Guidostrunk]

As far as input tubes go. I'm extremely happy with my 75 6n23p-Voskhod-SWPG, silver, HG's. I found a pair of matched 1972-6n6p-ir for 35 shipped. Is that a decent price for those?

Generally just a bit better than the 6N6Ps but certainly not nearly as good as the 6N30P DR variant. None too excited by the cryo treated valves in general but have not tried that one specifically. If you want to try these look for the older examples. The Valhalla seems to work well on good standard 6N1P and 6N6Ps where as Lyr need better tubes to really shine. Out of interest if you look around at 6N1Ps you will find examples from:

Voskhod, Kaluga
Nevz, Novosibirsk
Orzep, Orel
Foton, Tashkent
October, Vinnitsa
Anode, Diatkovo

and these are made in 6N1P, 6N1P Vi and 6N1P EV variants so plenty of rolling choice there that most do not realise. No night and day differences but fun.

Thanks Oskari, I have updated my info I thought there would be a few errors.

 

[Nic Rhodes]

Seems a good buy, IRs from 72, the El Raydar one?

 

[Guidostrunk]

Yep. That's them. Do you think it will be a step up from 66-6n6p from foton? That's what I'm currently using. I thought they were 68's but I looked back in my ebay purchase history , and in fact they are 66. Thanks for all your help.

Seems a good buy, IRs from 72, the El Raydar one?

 

[Nic Rhodes]

yes I think they will be better and probably the best solution from my point of view, mind you your current tubes aren't at all bad!

 

[Guidostrunk]

Thanks a lot Nic. Appreciate all your help. For $34 bucks , it's worth the purchase. You never know when these will be super hard to get. Cheers , man!

yes I think they will be better and probably the best solution from my point of view, mind you your current tubes aren't at all bad!

 

[Oskari]

Yep. That's them. Do you think it will be a step up from 66-6n6p from foton? That's what I'm currently using. I thought they were 68's but I looked back in my ebay purchase history , and in fact they are 66. Thanks for all your help.

 
Or you could, in fact, take a look at the tubes themselves to find out…

 

[Oskari]

 

 
Thanks! That's a very useful reference and should cover the audio types.

 

[Oskari]

For the sake of completeness, have you seen these, Nic?
 

1. http://www.gstube.com/factories/
2. http://istok2.com/factories/
3. http://radiomurman.ucoz.ru/index/0-14

 
I don't think there are any additional audio type manufacturers there, though.

 

[Nic Rhodes]

Never seen those, I did it the hard way! But thanks, interesting from the info I can make out. It looks like the valve makers are just a small bunch of a much larger system of 'mega' factories with logos.