The EI factory was bombed by NATO, but not heavily damaged. Because the city council of Nis is not run by the government party but by the opposition, Nis is one of only two cities to receive oil, but it may take years before any shipment of tubes makes it to NATO countries, due to embargo restrictions. Okay, enough about politics, let's talk about the ECC83. It misses just that little extra gain for power chords, but the weird thing is, it sounds almost as direct and in your face as the Chinese tubes. Maybe a good contender for holes 2 through 5, but not for the gain hole.
Information from http://www.fbk.eur.nl/BIT/MHM/gear/preamptubes.html
