Rippet I have had several of the Oyaide duplex and then tried the Furutech GTX-D and most recently the new Furutech NCF duplex outlets. The Furutech's have been cleaner and more musical than the Oyaide IMO.
(Dealer disclaimer)
(Dealer disclaimer)
Wall Receptacle Oyaide R0, Furutech GTX-G and SR Black UEF