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/nc3fah-0 A Series, 5 pole female receptacle, grounding: separate ground contact to mating connector shell to pin1 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 TRS 3.5mm, horizontal, through-hole, with switch, vertical shaft.