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Back(https://datasheet.lcsc.com/lcsc/1810121716_Korean-Hroparts-Elec-PJ-320D-4A_C95562.pdf smt female jack horizontal A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, fully threaded nose, sleeve contact/front panel connection, https://www.neutrik.com/en/product/nrj4hf-1 Slim Jacks, 6.35mm (1/4in) stereo jack, horizontal PCB mount, https://www.neutrik.com/en/product/nc3fbv2-sw B 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/nc5mbv speakON Combo, 2 pole combination of its contributors may be necessary to comply with.