Want the smooth rich tone of the Gold Pin tubes and the earlier breakup of the JJ EL844's? This is our Low Output Gold Pin Option Retube Kit for the Orange Thunder 30 Amps. It contains a matched quad of JJ EL844's for power to drop the overall output a couple decibels, a JJ ECC81 for the FX loop along with four Gold Pin ECC83S's one being current balanced for the phase inverter.