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 Low Output SRV Option Retube Kit and it contains a matched pair of JJ EL844's (to drop the output a couple decibels) along with a 5751 for V1, a standard ECC83S for V2, and a graded high current ECC83S for V3.