Want a very smooth and rich tone with less grit? This is our Gold Pin Option Retube Kit for the Budda Superdrive 30 and Stringmaster Heads and Combo Amps. It contains a matched quad of JJ EL84's for power, a JJ 5U4GB rectifier tube and three Gold Pin ECC83S's one being current balanced for the phase inverter in V3. Just let us know in the comments section if you're looking for an early breakup, a moderate breakup or a later breakup for more headroom in which case we will choose the coolest grades we have available for the power tubes.