I've not found power cables that useful, except to get shielded cables, which can be had relatively inexpensively.
Shielded cables can prevent your digital devices or other noise sources from reintroducing noise your conditioner removed. This comes up so often I wrote about it in my blog, including links to inexpensive shielded cables:
https://inatinear.blogspot.com/2019/04/power-management-for-frugal-audiophiles.html
Shielded cables can prevent your digital devices or other noise sources from reintroducing noise your conditioner removed. This comes up so often I wrote about it in my blog, including links to inexpensive shielded cables:
https://inatinear.blogspot.com/2019/04/power-management-for-frugal-audiophiles.html