QuadPortIEC boards arrived today from the manufacturer. They look very clean, though the design didn’t exactly push the envelope. At $100.00 for 100 sq inches of PCB (shipping included), they were not cheap, but I saw much less competitive offerings in the marketplace. Test fitment in the Hammond case looks good, though I need to order a few DIN sockets to test for sure.
That is a different way to do it. I made my simple version with a 4×3 rotary switch so the ports are always 1:1 and switches all 3 main IEC lines. There were some issues with only switching out the ATN lines (fastloaders, etc.)