Electron tube EF86 is a pre-amplifier pentode designed to be low noise and anti-microphonic. It is direct replacement for 6CF8, 6BK8, 6267 and russian 6Ж32П tubes. Made in former Czechoslovakia in years 1963 - 1964. Tubes are in original boxes. OTK stamp. Tested on BM215A tube tester.
(we reserve the right to change the description and specifications without prior notice)