What cable?

And 'per metre' isn't relevant, what matters is the totals. So you have much more flexibility with a short cable than with a long one.

Secondly a small hf rolloff due to excessive 'C' for instance may be audible in AB testing, but doesn't fit the popular descriptions of cable sound. It's not the effect that we're looking for. The 'electrically equivalent' criterion is simply to remove such false positives.

So being able to hear a small change in frequency response is merely quite interesting, being able to hear the difference between copper and silver is very interesting indeed.

Paul