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Identifying EMP stock 12AT7 tube

post #1 of 9
Thread Starter 
Anyone know what this is?

post #2 of 9
RAM Labs?? (shrug)
post #3 of 9
taoster,

When I received my new EMP last February, I had a different stock tube. The labeling read:

Ei (within a circle)
Yugoslavia
ECC 81
post #4 of 9

Re: Identifying EMP stock 12AT7 tube

Quote:
Originally posted by taoster
Anyone know what this is?
taoster, that's the same tube that came with my EMP. I don't know what it is... and am now using a Sylvania Gold Brand in its place. I'm curious too!
post #5 of 9
Thread Starter 
LarryS, do you have the US Model? I got my from UK, 220V. The 6DJ8 were labelled Tesla TD10s.

Someone must know what that symbol is? Hoping to give it a comparison between the TLFKN ECC81 diamond bottom and TLFKN ECC801S diamond bottom when i found the time.

post #6 of 9
Thread Starter 
HA! amazing what you can found on the internet if you look hard enough.


Looks like its the RFT O-getter, yellow text.

from http://www.machmat.com/sales/ecc81.htm#ecc81
post #7 of 9
Very cool taoster. Thanks for solving the mystery!

post #8 of 9
Yes, I purchased the US version.

But...isn't the only difference between the two in the transformer? The EMP unit itself is the same, no?
post #9 of 9
Thread Starter 
LarryS, as far as i know they are the same cept the transformer. it seems each different retailer/distributor stock their EMP stock tubes differently. It really doesnt matter, I still say rolling out the stock EMP tubes is mandatory for performance.
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