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matched pair EF806S Tesla - (NIB)
Tubes are tested and measured with the RoeTest V10 precise tube tester. Pairs are coming out of more tested new old stock pieces and will be delivered with measured parameters (plate current and transconductance) attached. Vintage electron tube EF806S Tesla is a pre-amplifier pentode of special quality, designed to be low noise and anti-microphonic. Improved version of the EF86. High reliable tube, vibration and shock proof, tight tolerances and extra long life (over 10 000 operating hours). Made in the former Czechoslovakia in years 1973 and 1974 (please look at the gallery pictures).
(we reserve the right to change the description and specifications without prior notice)