Can a power cord increase the resolution of an Class D (SMPS) amp by more than 5% ?

Al, what I’m afraid you don’t understand, is that both wires are directional. Both wires should be controlled for directionality. Which is obviously what Audioquest does. Nice try anyway. Then you will hear the effect of directionality, because the audible direction for both wires will be toward you the listener. We don’t care what the wire sounds like in the opposite direction. I don’t think I can say it any plainer.

Al,
Thank you for the clarification and I do understand both of your points of view but I’m still curious and I’m going to order one to compare.
If I like it better than what I presently use I will keep it,if not it will sale.Proof will be in the listening comparison for me.

Just curious,
Kenny.

Last time I checked there was only one way to connect most all power cords. So that kind of makes directionality a moot point. You will never know if sounds better the other way or not. I would not loose much sleep over this personally but fret away if one must.  GK will be glad to help I'm sure.

Moops checks in with yet another silly comment, guess he’s bored and figures, what the heck, at least he can boost his already astronomical post count. Obviously the whole fabrication process must be controlled to ensure directionality is correct. Not only for speaker cables and interconnects but also power cords and Ethernet cables and HDMI cables. Hiding your head in the sand doesn’t make the problem go away, Moops. Let us know when you guys figure out what the term directionality even means. 

Pop quiz 
Of all the various audio cables and cords which ones are not AC? 

I told you the master of all things futile Geooks would be glad to help! Maybe he can help folks if their specific power cord is oriented correctly or not. Or maybe reverse it for you to find out. For a small fee maybe. Only fair....