So, I was playing with the axe, and I noticed this sound coming out from the machine when a note is sustained on the wound strings of my KM-7 7 string. Attached is the Sysex and an mp3 of the noise, but I'm using the OwnHammer OH 412 MES-ST V30-EN-08 RVNT 10 cab, the last one in the list for the Mesa Boogie Overload cab. Can anyone explain what's going on and how I can fix it?
View attachment Marshall JMP-1 Tight.syx
View attachment Marshall JMP-1 Tight.syx