Matched pair 6P14P-EV (7189, 6BQ5 EL84, E84L) NEW USSR OUTPUT PENTODEImproved mechanical strengh and durability (5000 hours).New old stock. Made by Reflector plant. OTK stamp – high grade. * Matched tubes, may have different productions date * Before sending I surely check and matched all tubes.Only strong tubes – 100% garanty working.2 tubes in 1 lot.