here is a bit more explanation of my initial post in this thread.
approximately 4 years ago a local audiophile dealer friend offered to install a few of Oyaide duplex outlets in my system. i had been using the Jena Labs cryo'd outlets. he said he would remove them and charge me nothing if i did not like what they did. i told him it was not something i cared that much about, but what the heck....go ahead.
i had 11 of the Jena Labs outlets; initially my friend installed 3 of the R-1 outlets and WPC-Z cover plates. i used them on my amp, preamp and digital player.
i was not prepared for the degree of improvement in everything.....noise floor, vividness, dynamics, overall clarity. i was floored that simply improving the connection for my power cords could do that.
i had my friend add 2 more of the outlets so i could use them for everything, and still have enough of the Jena's in my system for a valid A/B. over the next 2 weeks approx 10 local audiophile visited for the A/B demo on the Oyaide outlets. 100% were very dumbfounded that there could be that difference.
then i replaced the other Jena's with the Oyaide R-1 and WPC-Z covers.
i was not expecting the change; in fact i was hopeing there would be no change. this was not any sort of placebo effect. the other friends who heard the A/B were quite skeptical.
ya gotta listen with an open mind.
yes; they are spendy. but paying for a gear upgrade to equal improving your power supply performance from these outlets would cost you more.....or maybe would not be attainable in any other way.