Want a very smooth and rich tone with less grit? This is our Gold Pin Option Retube Kit for the Orange Dark Terror, the Jim Root Terror and the OR15H Amps. It contains a matched pair of JJ EL84's for power, an ECC81 for the FX loop and three Gold Pin ECC83S's with one being current balanced for the phase inverter in V4. 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 which case we will choose the coolest grades we have available for the power tubes.