blues jr tone stack mod

The BillM Audio website has a lot of instructions (including videos) on how to work on these amps but you risk hurting the amp or more importantly, hurtingBlues Junior BillM DIY Upgrade Kit! Includes directions and Blues Jr III schematic.I purchased these for a Blues Jr III upgrade that didn't happen. Instructions for Billm Coupling Cap Installation board to install other mods, plan on doing it from the back; it's faster and easier.