Want a really smooth and rich tone with less grit? This is our Gold Pin Option Retube Kit for the Orange Dual Terror. It contains a matched quad of JJ EL84's for power and four Gold Pin ECC83S's with two being current balanced for the phase inverters in V2 and V4. A nice upgrade from the stock tubes, sweet and warm! 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.