No doubt there are quality and mechanical differences between receptacles.
Whether those differences result in an audible change is an entirely different matter.
Personally, I'd skip the hospital grade and other high-dollar stuff and get good quality commercial grade receptacles. Put the savings towards something that makes an undisputable improvement such as acoustical treatments for the room.
Whether those differences result in an audible change is an entirely different matter.
Personally, I'd skip the hospital grade and other high-dollar stuff and get good quality commercial grade receptacles. Put the savings towards something that makes an undisputable improvement such as acoustical treatments for the room.