DAP: EZ lock design in efficiency connect/disconnect, high insulation rating, solder type (wire) and PCB vertical and right angle bottom exit, female type offer larger contact area for better contact and stability. DAC series: elaborate and sophisticate design provide spacious area for your pc board desing, push lock and EZ lock; DAB series: Zinc alloy shell provides longevity and stability for using in PC board, suitable for XLR/6.3 plug, satin chrome and black chrome pated shell.