When using a power conditioner, why is it advised to run amps directly to the wall?

Otherwise, straight to the wall so you don't limit current...this is according to Nelson Pass, who also recommends using the power cord that comes with his amps.

Nelson who? What? Who dat? What kinda name is Nelson anyways? You gonna trust a dude called Nelson? No my man lemme tell you where it's at. I know a lot of dudes on the internet, and they do lotsa research from their barca-loungers, know what I mean? And they say you don't want no cheap cables, you want $5000 cables made of solid stainless steel. And if you can't swing $5000 cables well that sucks for ya but don't try and tell us your pathetic desinformation cause we know the truth! Look at that Nelson guy who can't even buy himself a cable. What does he know? Huh? I know who I believe, man. I do my research too.

PS Audio's power regenerators work by converting AC from the wall to DC (just like your amp's power supply does), then converting DC back to AC. So its output stage is essentially a large amplifier outputting a 50 or 60 Hz sine wave at the chosen voltage.

Which means that, theoretically, a power regenerator can output any kind of AC power since it is synthesizing it from DC. Think of the possibilities: You can take your entire system with you when your company relocates you to Europe and use it there as-is, or you could buy a full Accuphase stack from Japan and your power regenerator will feed it pure 100V 50 Hz AC power.

Interestingly, the old PS Audio (P300 and such) used to do just that, whereas newer models merely duplicate the incoming voltage and frequency.