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/nc3faav-0 AA Series, 3 pole male XLR receptacle, grounding: without ground / shell contact, lateral right PCB mount, replaces NL4MD-V-2, https://www.neutrik.com/en/product/nl4mdxx-v-2 speakON Chassis Connectors, 4 pole chassis connector, grey D-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv1 B Series, 3 pole male XLR receptacle, grounding: without ground/shell contact, vertical PCB mount, https://www.neutrik.com/en/product/ncj6fi-h-0 Combo I series, 3.