@samureyex @jrareform
LOL! ASR s faulted for evaluating equipment based on measurements (which are actually relevant to audio such as frequency response, distortion), and then you adduce measurements that are INaudible (capacitance, resistance, maybe also color?) to support your claim of differences? LOL!!! Can you tell from listening that cable has 10 µOhm/m vs 20 µOhm/m? (no idea about actual values, as they are irrelevant to audibility).
The real question is, are those different values audible, i.e. human perceptible? ASR makes excellent case that they are not, based on measurements that are RELEVANT to audio. That is why Amir makes frequent reference to threshold of hearing to put measurements into context of human experience.
Yes, Amir uses equipment that can measure differences way below the threshold of hearing, which is good scientific practice. Make sure you can possibly show differences relevant to the question at hand above noise floor of measuring equipment. I use scanning electron microscopy to look at 1–10 µm structures, although light microscopy could theoretically resolve down to 250 nm; in practice less due to diffraction, but that's a different story.
Re burden of proof, of course, nobody HAS to do anything. This is in context of scientific hypothesis testing, and there H0 is always no difference. Without having to show anything, scientifically there is no difference. QED.