2 layers114.3 × 54.6 mm

Boards in 2 GitHub repositories, designed in KiCad, that use the KA358 by onsemi (-16V~-1.5V、1.5V~16V 0℃~+70℃ 2 30mA 3V~32V 45nA 50nA 7mV 7uV/℃ 800uA 80dB Built-in compensation DIP-8 Operational Amplifier ROHS). See how each wires it, with its parts, size, README and files; the KA358’s symbol, footprint and pinout are on its own page.


intelliputer/audio-composites
Since just seeing isn't believing