Add note that C12 is optional; not needed if using real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of A4 71248cb440f4d8f8daaed2a21ef26b099a9d8e65 Add note resulting from real TL0x4s Add note resulting from real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of latch, https://www.neutrik.com/en/product/nc3fav2-0 A Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fah A Series, 3 pole male XLR receptacle, grounding: mating connector shell to pin1 and front panel, horizontal PCB mount, retention spring, https://www.neutrik.com/en/product/ncj6fi-v Combo I series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc4fav-0 A Series, 5 pole male XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fav2 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel. Current design uses six IDC 2×8 connectors with 4 positions D 2 pin Molex header | | J1 | 1 | Conn_01x10 | Pin socket, 2.54 mm, 1x2 (see build notes) 1 SIP socket, 2.54 mm, 1x10.