Good outlet for amplifiers

Carpathian, here are some copper units. I tested and liked the Furutech FPX-Cu and the Oyaide R-0, but the Oyaide R-0 is better in my mind. The ACME is very good, but silver plated

Furutech does have the FPX-Cu receptacle which is phosphorous copper, because pure copper is too soft to provide strong contact - $63 Cable Company

Acme Audio Labs have silver high purity plated copper - $65 Acme Audio Labs

Oyaide R-0 highly polished beryllium copper (same here, not pure copper because of clamping strength) - $151 Cable Company

Shunyata SR-Z1 high copper content brass - $100 Cable Company

Not sure that is all, but those are the ones I know of

@vthokie83 ,

Thank you! Yes, thinking about it copper is too soft by itself. Perhaps the use of rhodium is because it’s a very hard metal. But there are so many more metals with superior conductivity. Maybe it’s applied in such a thin coat it’s conductivity isn’t so much an issue.

thecarpathian

Gold plating works best for me, and then silver plating. Rhodium is loved by some, but it's just too much for me, and that incessant break in period is hard to take

@ghdprentice  Those Furetech's on Amazon might be fakes according to furetech website 

@thecarpathian

Maybe it’s applied in such a thin coat it’s conductivity isn’t so much an issue.

That is my understanding, but then why does it sound the way it does? How can a few microns of a coating make a difference to the sound? No idea, but it does. Cardas and all those other plug, connector and cable companies must have had some reason to use it over brass/silver/gold. Caelin Gabriel is the only guy who has stated he didn’t like rhodium to my knowledge, and does not use it in his stuff.

...on the all copper is your attaching bare copper wires to it anyway some decades old

You know, I’ve never thought of that. It never occurred to me to clean the ends of the wire with some emery cloth. Obviously I don’t think the most anal and eccentric audiophile would do this on a regular basis, but yeah, if you’re installing the plug it would be a good idea- why not? I am sure some audiophiles use some deoxit there.

And silver tarnishes too, don't forget.