No offence taken, Mosfet. I don't give much credibility to "facts" that don't take into consideration things that are important or of relevance to me.

I agree, but since the appreciation of hi-fi is as far as I'm concerned subjective then subjective evidence based on practical experience is to me what matters most. Regardless of what science says I will always use my ears to make hi-fi decisions.

Yes it is a pertinent question and I admire you for asking it - them responding with bogus science is quite predictable, however I see nothing wrong in the "try it and see mantra". If you accept their offer all you then have to do is listen and trust your ears. I don't see the difficulty in that. Or don't you have faith in what you hear? Strangely, this fairly basic skill seems to be a problem for the scientifically minded fraternity. The danger of fuelling your mind with scepticism is when it unhelpfully interferes with your decision making process.

I don't doubt that happens but as far as hi-fi is concerned there comes a point when you have to trust your ears otherwise making a decision about anything becomes problematic, and I don't have the energy. All I want is to listen to music so when I audition equipment, cables, or whatever, my sole criteria is what improves the sound the most to my ears, and to get the process over and done with as soon as possible. Anything else is completely and utterly irrelevant.

I think you could be waiting a very long time!

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Paul