X="3.7" y="2.8"/> - 2 x switching (normalling) stereo jack and switching ground contact, horizontal PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faav1-0 AA Series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj6fa-h-0 neutrik jack combo a Combo A series, 3 pole male 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/nc3fav1-0 A Series, 4 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, lateral left PCB mount, https://www.neutrik.com/en/product/nc4mafh-ph A Series, 4 pole chassis connector, black D-size flange, self tapping screw holes (A-screw), vertical PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3fbv2-b B Series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel: 9.8mm (alpha pots sliders: 3mm above panel, tight but possible mini toggle: ample space above 11.75mm (existing 1p12t rotaries, use 11.25mm holes to PCB edge 8.2mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector edge mount solder cup female x-pin-pitch 2.77mm mounting holes distance 63.5mm 37-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female.