1963 Pair Of 6S6B-V New Old Stock Low Noise Military Tubes For Lomo 19A13 / 19A18 Tube Microphones | Reverb
6S6B-V - Vacuum tubes | Russian Electronics company
Microphone Boutique - We like to tell people that the 6s6b tube is a Russian equivalent of the 701k; Someone took that very literally and put one into Telefunken 221b. And it