Audiophile Grade Wall Receptacle

OYAIDE SWO-XXX ULTIMO B/P or Oyaide R 1 for less money and less performance.  I’ve run both and kept the SWO-XXX.  They really do sound different, both markedly improved the sound.  I’ve no experience with others mentioned.

I'm using Maestro.....they were the most neutral when I was auditioning outlets

I throw audiophile outlets in the same bin as ethernet switches and cable lifters 🙄 I use Hubble hospital grade for a solid connection and that’s as far as I’ll go into that rabbit hole.

If you have some fancy (read: expensive) power conditioner, spending even more money on outlets is pretty silly. If you don't or have an inexpensive power conditioner, it's still silly to think an outlet will change the sound of your system.