Matched Pair Amperex 7316/ECC186 (=12AU7/ECC82) Short Plate Large O-Getter Top Seams Made in Holland. One tube flashes brightly upon powering up for about 2 seconds, which is perfectly normal for European preamplifier tubes. One tube has Clef logo. Very Early Production Amperex 7316/ECC186 from 1959. Date Code: Ct1 Delta 9D & Ct? Delta 9E Made in April & May 1959 in Heerlen Holland. -close dates- Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 2500/2380 2400/2420 where minimum good value is 1950 Tested in my preamplifier to make sure working as intended with no issues at all. |
I will gladly combine shipping upon request. |
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