I mean that all the controls work fine in their parameters, but is that squeelign. I am using a pedal tester for the pcb, but I don't really think that shielded wire will cancel this, is too much I think
Hi! Found this article wich shows hoy to do a "diy" 4301 with the most close replacement for the critical part (4305) 2 opamps and 2 resistors. Also they leave some images of a daughter board to make it tht. I hope it will be useful to someone...