Russian tube question.
Sep 9, 2012 at 12:05 AM Thread Starter Post #1 of 1

Fearless1

Headphoneus Supremus
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Heya,
 
 
I have been puttering around with the some Russian tubes as of late (6N23P to be exact).  I was wondering if anyone could please tell me what the ev designates. The best I could find from my research is "heavy duty".
 
I really am starting to like the sound of them, particularly the ones from the 70's, just wanted some more info before I tried the ev type.
 
 
Thanks for your time.
 

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