Originally Posted by ncpl
When you see some objective evidence that they are doing what they say they are doing you move the argument.
Umm, no. My argument has always been that there is noise on the mains and that a power cable isn’t going to be a very efficient filter, and that there are better ways of filtering - like a regenerator or power conditioner or a balanced mains supply, which is the best way, I think.
But I have also maintained that filtering takes place in the power supply of the actual product - in my case some 7200SE speakers.

I don’t have £8000 to spend on a mains conditioner. And I don’t have £4000 to spend on an ‘audiophile’ fuse. Or £16000 to spend on a ground box that is full of sand. Or a few thousand on several power cables. I don’t have such money because I’d choose to spend it on other ways of improving things that can be really heard - like room correction software and hardware.

ROON Rock on an NUC across the systems
Sitting room: 218, DSP7200SE
Study: 218, Quad 303, Spendor BC1
Bedroom: Musical Fidelity A3CR, Chartwell LS3/5a
Various Sonos boxes in bathroom and spare rooms