Nothing is more guaranteed to amuse non-audiophiles than the subject of high-end cable pricing. "I'm sorry. I don't mean to laugh at you, but...bwah ha ha haaa!" Who can blame them? Even in the hi-fi camp, there are those who are convinced that wires are no more than hideously expensive tone controls. "Hmmpf, cackle. Snort!"
Others hold that, differences in resistance, capacitance, and inductance aside (footnote 1), the whole high-end cable market is just an exercise in mass self-delusion. "Really, how much are they?"
A CD transport/digital processor combination introduces jitter in three ways: 1) the transport puts out a jittered signal; 2) the S/PDIF or AES/EBU interface between the transport and processor creates jitter; and 3) the digital processor adds its own jitter to the clock. These additive factors are largely responsible for the great range in sound quality we hear from different transports and interfaces.