I have four mains plugs currently into separate sockets on a dedicated mains - Supercap for the 252, 555PS for the NDS, 300DR power supply, and Hicap for the Superline. The 555PS on the NDS has a Powerline, the rest have the standard Naim cables.
Would a 4 lead Graham’s Hydra be an improvement, given I would not be using the Powerline? (Please don’t say buy a Musicworks and put the Powerline on that, or buy three more power lines - too expensive).
I found a Hydra a big improvement over the standard cable, I also made a cut to length Hydra out of Belden shielded cable and that sounded better than the Grahams one, never tried a powerline sorry