This kit is for you players looking for the for the Petrucci or Satrani tone. It contains a matched quad of JJ EL84's for the power section. Three handpicked high gain ECC83S's for V1 thru V3, a standard ECC83S for V4 and a balanced ECC83S for the phase inverter in V5. Smokin gain! 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.