Looking for a vintage vibe? This is the ECC803S V1 Option Retube Kit for the Laney Lionheart L20H Head and L20T Combo Amps. It contains a matched quad of JJ EL84's for power and a Long Plate ECC803S for a little lower gain with big thick mids and a little more sparkle in the highs along with two ECC83S's with one being current balanced for the phase inverter in V3.