I have both brands and also both types of plug coatings with no discernible differences between them;
The receptacle plug coatings (gold or rhodium) are alternatives to reduce oxidation , they are not tone controls.
There is no “best”, I have both brands and also all three types of receptacles (all-Cu, all-Cu gold plated, rhodium plated) with no discernible audio differences between them.
The receptacle plug coatings (gold or rhodium) are alternatives to primarily reduce oxidation , and they are not tone controls . I would also not get hung up on the imperceptible lab test published technical variances on transmission /connectivity .
My gold or rhodium plated All-Cu ones are still overly soft and malleable ones that require care and patience in reefing down the screws for attaching the power cable wires . I would avoid them in circumstances requiring repeated detachable power cord plug-in /plug-out circumstances .
Frankly speaking, in my experience, these wall receptacle tweaks were admittedly a very poor value for money IMO and even a questionable upgrade over my other “normal” hospital grade quality build ones. I would not repeat it again.
Intuitively running dedicated power lines and for each of the source and amp was the key audio performance improvement creator - not the wall receptacle.
Let’s also remember that the trunk power lines from the street to your lot line in many established neighbourshoods are frequently aluminum. The link into your house and to the wall are copper . Hospital grade receptacles are all you need as the final piece IMO.
Hospital grade will grip your plugs better than residental grade. I don' t get the overblown hype on recepticales. I don't discount people saying they hear a difference but is that due to the receptical or human nature? Try a hospital grade they are not expensive if you think it affects the sound then get an expensive boutique one and enjoy it.
There is a very long history of receptacles used for audio applications. There is no mystery, no hocus locus, and no doubt that the audiophile grade receptacles that have appeared during the past twenty five years are generally better than stock receptacles, sometimes far better. Hospital grade outlets have always taken a back seat to audiophile grade outlets. The same goes for power cord plugs and power cords. Hel-loo! No matter how much you have in the end you would have had even more if you started out with more.
I used common wall AC duplex for many years and was totally happy with them. My personal favorite was Pass & Seymour brand heavy duty 20amp. Other like Hubble hospital. (though many say the current Hubble Hospital are not any better anymore).
Then the 'middle' priced duplex: Cryoed, Acme silver.. Several in the $50 range. And then the Oyaide and Frutech at $80 to $280.As for buying them? I would say the op would be happy with a $6 Pass & Seymour duplex.
For plugs. I used to like Wattgate. but they are just basic plugs. At $13 for the male Edison type, and $20 for the IEC. they are entry level.
IMO to actually buy the expensive separate plugs from Furutech or Oyaide, the cost plus wire in just makes no sense (from a 'bang for your buck' perspective) ... Go BUY a fully finished aftermarket power cord. Shuyata, Pangea. Some low cost entry powercord. Unless you just have to try them out..
I use these and I am very leased with them.
You could also go with Porter Ports sold on this site. They are a cryo treated Hospital Grade Hubble if I am not mistaken.
I have used Pass & Seymour in the past and they work well.
I beg to differ (as many other) that plugs/outlets cannot be used for tone controls.
As far as plating, gold is not really neutral. It's more warm sounding with rolled off highs. Rhodium is definitely more revealing, but probably more neutral. Silver plating is bright/fast and will push upper mids/highs. If you want true neutral, probably the best is nickel plating, but that is also lower quality and typically uses brass conductors (which in my opinion push the voltage too hard and sound becomes shouty).
Like other said, if budget is concern, the Porter Ports are cryo-treated hubbels.
Or get a PS Audio Power Port. They are nickel plated over copper. Probably the most neutral outlet, and only $49.
auxinput mentions outlets as tone controls. One thing I have found since I went to all Furutech duplex, is that common brass outlet parts/plugs (with no plating) are actually pretty bad! They harm the sound. You never know this until you are rid of them!
Having gotten rid of them, then trying some, yikes! they are terrible. naturally only in a tiny audiophile ear killing way. (normal folks would never notice anything different IMO).The other thing is I originally liked the gold plated Furutech GTX better ... at first. but as time goes on(for weeks for some new duplex) I am happier with the sound of equipment plugged into the Rhodium GTX NCF duplex. Just a little better detail, tiny bit smoother highs.( I cannot say if this is due to the NCF. Since no gold Furutech Duplex use it yet.)
i read your numerous answers and I wish to thank of all you for your great and such kind answers.
i will try furutech gold and rhodium model. Gold was advice by my cable provider. His plugs are in gold too...
in parallel I strongly advice you to use some oil on the connectors such as Drop oil from Charlin, à french provider. This oil is usable on power cable and modulation cable. LS too. Never on rj45 cable. As you know the aeronautic industry is using such a kind oil in their cable connections. Thanks again for all your answers,
all the best in music !
Remember the Rhodium takes many hours to sound it's best. and it will seem good then go back to being thin sound and accent the treble, back and forth until it settles down. Two weeks in and still changes back and forth. Otherwise much better. Just be prepared for the long break in. (or run the outlet on an appliance for a month!) I Googled the oil you mention. I would probably buy the Furutech product like it.