Electron tube 6N6P (6Н6П) is a russian double triode with anode dissipation of 2x4W. It was designed especially for low frequency power amplification. 6N6P does not have any known direct american or european replacement, it is very similar to the ECC99, but it has different pinout!! Service life guarantee: 2000 operating hours. 6N6P is a direct replacement for the chinese 6N6 tubes and its military (6N6-T) versions, these are commonly used tubes in different headphone amplifiers coming from China. New old stock tubes, directly from the factory packing. Year of production: 1982.