I have a ECC83 preamp tube that came out of a Matchless preamp pedal. It has "Yugoslavia" written on it and a big "EI" inside a circle on the front.
Anyone know what type/brand this is?
Thanks.
BTW, for those of you too lazy to follow the link: ECC83 is the Eurpoean designation for a 12AX7. Same tube (at least to the degree that any two tubes are the same.)