Originally Posted by woomanmoomin
The above article does mention the 6C315P valve, but I get the feeling something has been lost in translation at some point in the past and that the result (the name '6C315P') is now being quoted as standard. Hopefully the actual valve type will be a common one...
Anatoliy, is there anything like a 6SZ15R? (I guess not.) I guess that would be Cyrillic 6C315P
Cyrrillic Zh looks like >-|-< that most probably could be "translated" into set of some familiar Latin characters.
Such letter after the 1'st number (rounded filament voltage, 6.3V) means "Pentode". Cyrillic "C" (sounds as "S") means triode.
P at the end means "Miniature, finger type", 7 or 9 pin.
R at the end does not exist.
The mic uses 6Zh1P (or may be pronounced as 6J1P) tube that is exactly 6AK5. If you need 6Zh1P I have some, but you may buy it on ePay like I did. http://cgi.ebay.com/6J1P-EV-LOT-OF-1...mZ180087375503