ok,
reading some of the previous posts it seems as though some are claiming that power cords are a universal panacaea for all hi-fi ills. they aren't of course but they can work well with certain kit. i've heard tony's gear both with and without the trick mains cords he uses (not the current ones) and there was a definite improvement in both round AND flat qualities. i've also had several respected power cords tried on my own kit and without fail they have been detrimental - to my ears although others opinions differ.
i wouldn't tar all naim lovers with the anti power brush as about 30% of posts on the naim forum are about fuses, new spurs, power blocks or hydras. the thing is that naim seems to be a bit more fussy about what you plug into it power wise and that naim themselves have done a good job selecting an apropriate power cable for their kit.
cheers
julian