Double triodes 6N2P-EV (6H2П-EB) are 6N2P tube modifications with extended lifetime (not less than 5000 operating hours under prescribed conditions) and improved reliability. These tubes are direct replacement for the 6CC41 from manufacturer Tesla and close by characteristics to the 12AX7, ECC83, E83CC. 6N2P-EV tubes are a replacement for the 12AX7 in any typical amp application, but they have 6.3V heater voltage and would need a different wiring than stock 12AX7's, so it is not a direct replacement. New old stock and selected from a higher amount of tested tubes. Tubes were made in the period from 1975 to 1976 in the VOSKHOD - Kaluga factory. OTK stamp. Will be delivered in modern white boxes.