6N2P-EV (6H2П-EB) is a low-microphonics double triode. High durable and long life tube (more than 5000 operating hours) - EV version. Close by characteristics to the 12AX7, ECC83, E83CC. 6N2P-EV tubes are a replacement for 12AX7 in any typical amp application, but they have 6.3V heater voltage and would need a different wiring than stock 12AX7's. New old stock tubes. Manufacturer: Voskhod. Made in the 70's.