I just replaced a customer's stock power cord on a $25k amplifier with a $3k Shunyata Sigma. The difference was immediate and obvious. A few hours later the customer called me to tell me how happy he was, how much he was enjoying his music. When he bought the amp a few years ago he was given a choice, and claimed he couldn't hear a difference between the stock power cable and a then top of the line power cable. In the interim, he upgraded his speakers to Wilson Sasha DAWs, his DAC to a Berkeley Reference DAC, added a DCS Network bridge to feed the DAC, and upgraded from a Mark Levinson to an Ayre preamp. My point is first that his system now has sufficient resolution to appreciate the improvement provided by the new power cord. Second, manufacturers of cables continue to learn how to make their products better.
Finally, it would be unfortunate not to get as much performance as possible from one's investment in components!
It is not at all obvious to me that experience in designing and manufacturing exceptional amplifiers (for example) gives a company a leg up in designing cables.
In fact, one of the very best manufacturers of high performance amplifiers, Spectral, depends on another specialist (MIT) to complete their designs.
Finally, it would be unfortunate not to get as much performance as possible from one's investment in components!
It is not at all obvious to me that experience in designing and manufacturing exceptional amplifiers (for example) gives a company a leg up in designing cables.
In fact, one of the very best manufacturers of high performance amplifiers, Spectral, depends on another specialist (MIT) to complete their designs.