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/nc3fahl1-0 A Series, Chassis connector H female (A series layout), mates with Phoenix MSTB2,5/3-ST, horizontal PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fbh2-da B Series, 3 pole male XLR receptacle, grounding: mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3maah AA Series, 3 pole XLR female receptacle with 6.35mm (1/4in) mono jack, switched, half threaded nose, https://www.neutrik.com/en/product/nrj6hh-au Slim Jacks, 6.35mm (1/4in) mono jack, switched, with full threaded nose, https://www.neutrik.com/en/product/nsj12hf-1 Stacking Jacks, Stereo dual jack, quick fix nose, https://www.neutrik.com/en/product/nsj12hl Combo I series, 3 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc5fbv-sw B Series, 3 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, lateral right PCB mount, https://www.neutrik.com/en/product/nc3fahr2 A 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/nc4fbh B Series, 3 pole XLR female receptacle with 6.35mm (1/4in) jack receptacle, horizontal pcb mount, replaces NL4MD-V-2, https://www.neutrik.com/en/product/nl4mdxx-v-2 speakON Chassis Connectors, 4 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, vertical PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 1.00u, http://matias.ca/switches/ Matias ALPS keyswitch 1.50u PCB Cherry MX keyswitch, 1.75u, plate mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 1.25u, http://matias.ca/switches/ Matias ALPS keyswitch 1.50u PCB Cherry MX keyswitch 1.00u PCB Cherry MX keyswitch 6.25u PCB Cherry MX keyswitch 6.25u PCB Cherry MX keyswitch, ISO Enter, PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faah2-0 AA Series, 3 pole XLR female receptacle with 6.35mm.