Need a little more gain for your Mini Rec? This kit uses a matched pair of the JJ EL84's for power along with three handpicked high gain ECC83S's for V1, V2 and V3, one standard ECC83S for V5 along with a balanced ECC83S 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 in which case we will choose the coolest grades we have available for the power tubes.