It's no secret that Stevie played his amps cranked and preferred a little cleaner sound from the front end allowing you to hear more power tube breakup. This is our SRV Option Retube Kit for the Classic 30, Classic 50 and Delta Blues Amps. It contains a matched quad of JJ EL84's for power along with a 5751 for V1, a standard ECC83S's for V2 and a graded high current ECC83S for V3. Just let us know in the comments section if you're looking for max headroom, moderate or an early breakup so we can select a proper grade for the power tubes.