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. Well, this works really well with the Epiphone amps too! This kit uses a JJ 5751 for V1 which is in-between an ECC81 and an ECC83S in gain Along with two ECC83S's one being current balanced ECC83S for the phase inverter in V3. The power tubes are a matched pair of JJ 6V6S's.