Want a really rich and smooth tone with less grit? This is our Gold Pin Option Retube Kit for the Kustom Defender 15 and V15 Amps. It contains a matched pair of JJ EL84's and a Standard Gold Pin ECC83S which is used for both the input and driver tube. 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.