Matched Pair Amperex 7316/ECC186 (=12AU7/ECC82) Short Plate Large O-Getter Top Seams Made in Holland. Very Early Production Amperex 7316/ECC186 from 1959. Same Date Code: Ct1 Delta 9C Both tubes are made in March 1959 in Heerlen Holland. Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 2770/2700 2720/2700 where minimum good value is 1950 Measures strong and very tightly matched! Tested in my preamplifier to make sure working as intended with no issues at all. |
I will gladly combine shipping upon request. |
|