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(from the front panel. - Current design uses six IDC 2×8 connectors with 4 unused pins if supplying power, but not necessary for old fogeys like me to get 1:1 between schematic and front panel, lateral right PCB mount, https://www.neutrik.com/en/product/nc3mahl A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, with full threaded nose and straight PCB pins, https://www.neutrik.com/en/product/nmj4hfd3 M Series, 6.35mm (1/4in) switching stereo jack and switching ground contact, vertical PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch.

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