Audiophile Grade Wall Receptacle

I too have the Oyaide. Best bang per buck.

You want copper not cheap hospital grade brass.

I installed two PS Audio "AV Grade" receptacles when I built my dedicated audio room. I have no idea if they do anything special for the sound as I've never listened to anything else in that room. To be sure, they do grab the plugs tightly. It doesn't hurt that they are finished in a masculine no-nonsense gray.

+1 for Oyaide

Hospital grade and hospital grade isn't significantly better than a screw time regular grade (avoid push in type, even if you aren't upgrading).  The regular outlets will loosen up with use and hospital grade won't.  

there are many audiophiles that feel much better about components with an audiophile brand name on it, thus the rebranded outlets at high prices.

I use Cardas AC outlets.

http://www.cardas.com/power_outlets.php?msclkid=a82e9ffbb93211ec8891704d3562f65e