Add note that C12 is optional; not needed if using real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of latch, https://www.neutrik.com/en/product/nc3fahr2-0 A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) jack receptacle, vertical pcb mount, replaces NL8MD-V-1, https://www.neutrik.com/en/product/nl8mdxx-v-3 speakON Chassis Connectors, 4 pole male XLR receptacle, grounding: ground contact to mating connector shell and front panel, horizontal PCB mount, replaces NL8MD-V, https://www.neutrik.com/en/product/nl8mdxx-v 4 contacts, 3.5mm audio cui horizontal jack stereo horizontal waterproof 6.35mm (1/4 in) Vertical Jack, Non-switching stereo jack without switching contact, horizontal PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3faav1-da AA Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbv A Series, 5 pole male XLR receptacle, grounding: without ground/shell contact, lateral left PCB mount, retention spring instead of the.