Replacing generic RECEPTACLES

glennewdick, There are US duplex that accept both a 20 amp and a 15 amp plug blades, and they are very common. Plenty of discussions center on 'are 20 amp duplex legal on 15 amp lines'.. In the USA, by code, which is the legally binding rules for electricians (but not so much for audio hobbyists it seems..), just to clarify
And cleaning the blades also helps if they are just bare copper or silver. I find using a product I have around is excellent at taking off tarnish. Meguiars Scratch X is for automotive finishes, but it is great for polishing CDs, and the copper or silver or brass plug blades. It clears off the tarnish, and slightly polishes the metal.(I do think most audiophiles replacing IC and other wires move there plugs and connectors more than once every few yeas....LOL So that unplugging my not be as big a deal as one who never moves gear for years might think. The real test to HEAR if there is a difference you like... is to plug the old one back in, later. Is is as good? worse? BETTER? Generally if the old one is as good/better to your ears, return the new one for a refund. I would never keep something unless it really sounds better. And have returned multi thousand dollar items since they did NOT sound better.

How do you people deal with vibrating wires in the wall ? You think it's nothing ? There is an external vibration and vibration created by the current.
Just don't respond to pseudo-scientists and they'll give up. Everything makes a difference, only questions are to what degree, what exactly and if you can hear it.
I once polished the blades with Flitz, didn't hear a difference. Clean all connectors with Kontak once a year - hear a difference.
I must get that Furutech, gold I think. But then I will want to upgrade the power cord from the wall. Damn. The cord is quite good, by the way.

They just fill the wall with magic pixie dust whilst making snide comments in public to each other about the new family that moved in down the street, and the vibrations of the wires mysteriously disappear.

Yep, that's it, don't you feel left out?

A lot of this information that is given on this thread is wrong and tread lightly when listening to some of this. Most new construction will use 14g wire for 15 amp lines and most use 12g wire for 20 amp, never smaller but you can use 10g. Never assume anything. No builder is going to pay a premium of using 12g wire for 15amp circuits. I have purchased and built 5 new homes in the last 18 years and every builder in every state has done this. We are building a new custom house now and this builder does the same as the other 5. If unsure, open your panel and verify the wire used. Another thing you should do is have either an electrician or your local utility come out and place a device over your circuit to show exactly how many amps you are drawing on the line. There are guidelines on how many max amps you want to draw. For example, on a 15 amp line, you don’t want to go over 10 amps, this is just an example, not sure 10 is accurate, it might be less or more, but never close to 15.
in my latest custom house in my dedicated audio room, I have 6 dedicated 20amp circuits. Cheap to do when building. Large monoblocks, used to use 2 large powered subwoofers, 2 large motor hanss t-60 tt, pre, dac, and other equipment, and the circuits can go fast. Without the subs, I use 4 circuits. Overkill, maybe