I now have six peculiar white receptacles in my house. They really don't like to let go of the plug they are holding, which stands in stark contrast to the 25+ year old outlets they replaced. I am as of yet unsold on any sound quality improvements, and will most likely remain so. At least my plugs don't fall out of the wall now. After coughing up $11 per outlet, and $40 per hour to have them installed, I'm thinking I should spring for some new faceplates. The current ones are vintage 1967 and rather grimy.