That reminds me, during the above experiment I had a pair of interconnects on the pre out/main in and they weren't shielded. I was getting interference for 1 second upon start up, then quiet. I couldn't figure it out immediately, and it made me nervous!
Finally I swapped out those IC's with some others that were shielded, and no more noise. It made me realize that everything does matter.
Finally I swapped out those IC's with some others that were shielded, and no more noise. It made me realize that everything does matter.