Evolution xpc ofc professional instrument cable evolution xpc 301 011 20m p buy evolution xpc professional instrument cable black 20m ndash a quality professional flexible instrument cable designed to reduce the effects of micro phonic noise caused by movement p p incorporating the following features professional instrument cable 24awg wire size 7 0 2mm conductor stranding 6mm cable diameter 84r km conductor resistance 99pf m capacitance oxygen free copper conductor material b