- 2 x switching (normalling) stereo jack (T/R/S), https://www.neutrik.com/en/product/nj3fd-v 6.35mm (1/4 in) Vertical Jack, Non-switching stereo jack without switching contact, vertical PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fav1-da A Series, Chassis connector Phoenix H male (A series layout), mates with Phoenix MSTB 2,5/3-ST, horizontal PCB mount, retention spring, https://www.neutrik.com/en/product/ncj9fi-h Combo I 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/nc3fah2 A Series, 3.