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/nc3fahr1-0 A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, with full threaded nose and offset PCB pins, https://www.neutrik.com/en/product/nmj4hfd3 M Series, 6.35mm (1/4in) jack receptacle, vertical pcb mount, https://www.neutrik.com/en/product/nlj2md-v speakON Chassis Connectors, 8 pole chassis connector, grey D-size flange, mirrored self tapping screw holes (A-screw), horizontal PCB mount, https://www.neutrik.com/en/product/ncj10fi-h-0 Combo I series, 3 pole male XLR receptacle, grounding: without ground/shell contact, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj10fi-v AA Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, horizontal PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc5mbh-b B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3faah1 AA Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, vertical PCB mount, additional ground contacts, https://www.neutrik.com/en/product/nc3fbh1-e B Series, 3 pole female XLR receptacle, grounding: mating connector shell and front.