Want a very smooth and rich tone with less grit and the earlier breakup of the JJ EL844's? This is our Low Output Gold Pin Option Retube Kit for the VOX AC30CC and AC30HW2. It contains a matched quad of JJ EL844's for power to drop the overall output a couple decibels, a GZ34 rectifier tube along with three Gold Pin ECC83S's one of them being current balanced for the phase inverter in V3.