I ran across this white paper about a year ago. It may be of interest to you EEs and such.
Smoke and mirrors.
"We have presented a new distortion model that accurately predicts the audible behavior of the various metals in common use for audio applications."
Pretty neat trick given that to date no one has established actual audible differences among cables save for the well known effects of resistance, inductance and capacitance when they're severe enough to cause differences within known thresholds of hearing.