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 Magnatone amps too! This kit contains one ECC82 to replace the 12AU7, a 5751 for V1 along with two ECC83S's with one being current balanced for the phase inverter in V4. The kit includes a JJ GZ34 rectifier tube and the default power tubes are a matched pair of the JJ EL84's but you can configure this kit to use the JJ EL844's by clicking on the "Customize" button!