There are many types of coaxial cable. SPDIF cables are typically made of coaxial cable ("coax") with a 75-ohm characteristic impedance.
Regarding bandwidth, the SPDIF specs and those of the receiving and sending units are more likely to limit bandwidth than the actual cable used.
What lies beyond 192? Opinions vary widely. Mine is that beyond 24/96, there is little or nothing added other than marketing fluff.
Regarding bandwidth, the SPDIF specs and those of the receiving and sending units are more likely to limit bandwidth than the actual cable used.
What lies beyond 192? Opinions vary widely. Mine is that beyond 24/96, there is little or nothing added other than marketing fluff.