Power Conditioner vs A/C cables

If you have a neurotic fixation on power cords just get some $90 Pangeas from AA. I assure you they are excellent and very well made. Cost-effective and will not degrade the sound quality of any component! I'd worry about what's coming out of your power supplies - not what is coming out of the wall outlets!

Both. One does not negate the need for the other. Very clear and easy to hear.

Ted Denney Lead designer, Synergistic Research Inc.

A good power cable before and after power conditioning, has alway deliver better sound for me.

Same experience here as @68pete relates..

I've had difficulty hearing much difference between power cords. (Not so with interconnects, speaker cable). But when I bought an Audioquest Niagara 1200 conditioner, the difference was pretty obvious. Actually took me a while to adjust to the noise not being there anymore.