I'm thinking of getting an ODAC with RCA outputs so that I can connect the 3.5mm output to my O2 headphone amp and the RCA outputs to my stereo speaker amplifier. However, the JDS Labs webpage warns: " Please note that ODAC supports only 1 output; do not use 3.5mm and RCA jacks simultaneously."
Why is that? What would happen if I connect my equipment as described above? I only intend to have one of the amplifiers on at a time (it wouldn't make a lot of sense to listen to music on the headphones and speakers simultaneously).
Just unplug the 3.5mm if you're using the RCA output. They're less susceptible to wear, given the RCA plugs' design that has them contracting and expanding if pulled out and pushed back in too often, that might scratch the coating.