How can that be?
I see no logic in these claims about power cables. I am still waiting to see a good explanation and not just feelings.
Power cords can make an audible difference and it seems that's due to filtering of injected/induced RFI/EMI. The issue may depend on locality (mains RFI noise) and interference from nearby RFI/EMI sources. Not every case benefits from a filtered cord, others do. I have none, but I do have a competent power line conditioner.
Edit: typo.
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