Hey. My head needs the tubes changed. There is 12ax7s in the pre amp at the minute (the rest of the circuitry is MOSFET) but
rather than just replace them like for like does anyone have any experience with JJs or Tung-sols in this model? I've heard Tung-sols give a bit more clarity in the low end which sounds nice as the low end through my cab sounds slightly muffled (Marshall MBC 410).
Any body have any ideas? Or a link to a comprehensive description?