Keep telling yourself that 😂 @coralkong my system is as or more revealing than yours. Have 5 dedicated lines, and all those outlets are still in place. The .99 cent outlet is what I plug my laptop into.
So when you go to a audio show they replace all the outlet in that hotel room? If it really made a difference they would, but they do not.
You have been bit by the Snake Oil Salesmen and so was I. I did my experiment and found ZERO benefit, Also same with the vaunted cable lifters. Now I do use quality cables (Synergistic, DH Labs, Transparent, LossLess) I also use quality power distributors ( IsoTek and Wisdom Cable). I have Puron (4) and NFC Power (4) filters as well and they made a substantial improvement as they actually have filtration qualities unlike a $200.00 outlet that simply provides a ground. Also have the Puritan Ground Master (made minimal difference as we upgraded our whole house ground when upgrading our dedicated lines),.
My journey is complete and I am enjoying Piano Concerto No 18 in B-Flat by Vladimir Ashkenazy and it is giving me goose bumps. I am sure it becasue of the Cardas Duplex that my SPL m1000s are plugged into.