Replacing generic RECEPTACLES

I wanted a 'warm' one to start with.I would think it is the easiest to 'hear' as a difference before I spend any more on receptacles.Plus I want to warm up my amp a little, maybe.
Curious I was also reading a thread with other folks high value of the Pass & Seymour (non audiophile) receptacles.  I have separately been a fan of them for many years.Anyway trying out one high end well regarded receptacle should be good.

@elizabeth .......... That sounds good. That warm one would probably would be the easiest to hear as a difference. After my 3 burn in and install them i will let you know what i hear. 

Thanks, I would be interested in how they sound. I would guess it will take awhile for them to really break in? I am going to use my idea of two plugs with wiring directly to the back of the new duplex. plugging that into the possible to replace duplex, then the equipment in to the new duplex. to see how it sound from my Furman for the preamps. I do not want to have to do a LOT of work just to hear it there (taking apart the box, etc..) so I am hoping to get a glimpse by piggy backing the new duplex over the one in the case. As long as I avoid shocking myself LOL
Then it goes into the space for the Amp duplex.

I have a question, and I do use special outlets, so I am not a Luddite - at least in this instance, if not others.

When I install a new outlet, I cut back the oxidized wire to expose fresh, gleaming copper. How much of the improvement that I am hearing is due to this? Has anyone been so OCD as to cut back the wire and then put the old outlet back in to see if they can hear a change?

Along the same lines, has anyone removed a junk outlet, let’s single out our friends at Leviton for example, and replaced it with a brand new outlet of the same model? And you thought that you had too much time on your hands.

There is truth to just exposing new clean copper, and replacing the old outlet with a new one. I personally use Pass & Seymour heavy duty duplex. They cost about $6 now. (personally you could not GIVE me a Leviton..)  Also, the truth of just unplugging and replugging everything once a year matters. And if you have unplated copper, cleaning the contacts too.I have often scrapped off the surface of copper (like in coax cable TV lines) with the tip of an Exacto blade to clean the oxidation off.I would tend to do the scraping before cutting.. There is only so much extra wire in the wall!