Standard switching diode, DO-35Push button switch, generic, two pins K switch spdt single-pole double-throw spdt ON-ON D Push button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | R4, R6, R7 | 2 Hardware/Panel/precadsr-panel/sym-lib-table | 4 812d609d12 More assembly notes - C1: enlarge footprint; a box film cap instead of latch, https://www.neutrik.com/en/product/nc4fav-0 A Series, 3 pole female XLR receptacle, grounding: without ground/shell contact, lateral right PCB mount, https://www.neutrik.com/en/product/nc3mbh 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/nc3mbh-1 B Series, 4 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, horizontal PCB, replaces NL2MD-H, https://www.neutrik.com/en/product/nl2mdxx-h-3 speakON Chassis Connectors, 4 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/ncj10fi-h-0 Combo I series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, additional ground contacts, https://www.neutrik.com/en/product/nc3fbh1-e B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbh B Series, 4 pole chassis connector, grey D-size flange, countersunk thru holes, horizontal PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch, 2.75u, plate mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch 2.00u Matias/ALPS keyswitch, 2.75u, PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc5fah-0 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel. Opportunities abound for aesthetic choices. - Determine appropriate stand-off hardware for connecting front panel and Pin 1, steel retention lug, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv2 AA Series, 3 pole XLR female receptacle.