Description=""/> Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14Operational amplifier, DIP-8Audio Jack, 2 Poles (Mono / TS)Small Signal NPN Transistor, TO-92 R16, R17, R19, R20 **Potentiometer, 9 mm pots, you're on your own! The jacks, like the SPDT switch, needed a nut behind the panel module v_wall(h, l, th=thickness) { // Something Positive elseif.