I'm wondering what mod this is? I drew an arrow pointing to it. I see there is a Cross Line master volume connected to volume II. That's pretty obvious. Is that purple jumper wire some sort of one wire mod? I can't quite see where the purple wire is soldered. Anyone know or have any ideas as to what it might be? Thanks!
Strange. A wild guess but it seems as if the pink wires running from the PI coupling caps to the volume II is a PPIMV Surely it's a modded amp
As matttornado suggest, i think it's simply shorting the unused normal channel mixer side to ground. They could just have grounded the other end of the brown wire, but without a better pic?....