6P14P-EV (6П14П-EB) pentode designed for output stages of low frequency amplifiers. Direct replacement for EL84 / 6BQ5. Tubes were measured on L3-3 tube tester with original 6P14P-EV/6P14P-ER card. Long life - E (minimum of 5000 operating hours) and high reliable - B tubes. New in box. Will be delivered with measured parameters attached.