Tiny HF pentode tubs.Lot of 6 tubes. Rare and great sounding, ideal for RIAA preamplifiers, made in USSR. High reliability, long life non less 5000 hours. Tubes have ” OTK ” and ” ◊ ” marking. Microphnic noise,mV 10.
Tiny HF pentode tubs.Lot of 6 tubes. Rare and great sounding, ideal for RIAA preamplifiers, made in USSR. High reliability, long life non less 5000 hours. Tubes have ” OTK ” and ” ◊ ” marking. Microphnic noise,mV 10.