Ac cords or power conditioning first?

Agree with Rushton and Thorman. That's how I did it. Also consider a Porter Port or two for your dedicated AC outlet.

A fourth for dedicated lines, quality outlets, then better cables. Power conditioning will probably not be needed.

Agree with all above but would do receptacles after the dedicated lines and before power cords as they will affect the sound of the cords.

Okay-I have to disagree a little with the posters above....

Dedicated lines yes. Good power cords yes. Porter Ports- yes.

Power conditioning- still yes. Can offer isolation between components, further lower the noise floor, and improve your experience.

Try something like a BPT Signature 3.5 and if you don't hear the improvement I'd be surprised.

I also agree with Danlib,

For me living in Florida where a bazillion A/C units run on any grid namable power conditioning is a must, as is some type of battery backup.

I run PurePower which is a power regenerator and has battery backup as well. Not only are they not current restricting, they will utilize the battery backup to increase output beyond the line level for peaks!!!

I have run several other conditioners and all changed the sound, often cleaning up the background but nothing improved my sound as much as the PurePower units.