Originally Posted by rs_
One time, a long time ago, I thought I saw an internal pic of the E&S mixer, and it was done on breadboards. Does anyone know if this is the case...not sure if I dreamt it? Thanks, rs
Think you are talking about the grid pattern on the PCBs that could look like a breadboard. One reason for having it like this is that when printing PCB film and having large black areas it can be difficult to print these areas 100% black on some printers and adding a grid pattern is the way to solve that. There are some other reasons to do this also when using large ground planes, but that's another discussion.