Yes thats right. At the moment I have a straight copper one in there, but I also have a rhodium and silver one still to try. These arent Veras ones, you can get them off ebay cheaply to see how they change the sound.
https://www.ebay.co.uk/itm/204932285051 Someone also said a titanium one sounds great too
https://www.ebay.co.uk/itm/226240041929
As to the overall change, its an effect of more music coming through, like its coming through a fire hose rather than a hose pipe, everything just seems to be more full I guess, more detail, more presence. Apparently the effect is more marked the higher the current draw, so amps in particular are supposed to respond well although haven't tried them yet, and vice versa a low current device like the server is supposed to have the lesser effect. However despite this, I would recommend them, they are worth it even for the Innuos