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 five ECC83S's with two of them being current balanced for the phase inverters in V6 and V7. The default power tubes are a matched quad of the JJ EL84's but you can configure this kit to use the JJ EL844's by clicking on the "Customize" button!