I had previously tried a Supra Lorad Silver ilo of the cable that came with the switch (actually not sure IF it came with one new), but found it really strangled the sound, a very compressed and shut in sound.
I found a new standard Naim power lead and used that instead, i recall it just made sense, sounded natural and err very Naim.
I upgraded another power cable so had a spare Naim Powerline Lite, i had been meaning to try this on the Cisco, but with all the firmware drama left it, until today.
The result a worthwhile improvement in detail, clearer vocals more bounce (?), plus free (so to speak).
My original setup the CIsco had it's own mains socket, now it shares a powerblock, a compromise in sound, plus i think the Powerline would maybe work better into a wall socket ...
I also had some spare Atacama speakers pads, a whileback i added these, cannot recall any improvement.