How about this affordable approach? Buy a sturdy 14 or 12-AWG power cord from a retailer that sells guitars, amps and other instruments. Then install a ferrite choke on each end, 6-inches from each connector. Done. Ferrite chokes reject RF and EMI contamination. This is not snake-oil or voodoo science; it’s a proven fact.
Btw I use Nordost power cords but only on certain components...the rest of my gear uses the inexpensive cords that I described above.