I'm running Mark's Xmos DXIO PRO3A USB/SPDIF converter, need to make a cable to run from the rca out into my Benchmark BNC (75ohm) in, what impedance cable must I run? 50/ 75/110 or what ohms? There seems to be no clear answer here. Looked all over for specs no mention of the output impedance of the Xmos converter surely I must follow the Xmos impedance and not the dac? Also can I use a normal rca plug? Apologies for all the questions.
