Champion 600 Want to get some more juice from your Fender Champion 600 or Gretsch G5222 amp? Check out JR Frondelli’s article DIY: Hot Rodding The New Fender Champion 600 article on the Articles page. JR takes you through each step and has the parts list you need to make your amp scream. Parts kits are available directly from JR at dBm Pro Audio. Get soldering!