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skatbelt

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About skatbelt

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  1. My suggestion: keep it 'as is' and go fiber to the etherREGEN by placing a Sonore opticalModule between the Netgear and the EtherREGEN. You could power the oM with the JS-2 or go with a separate LPS. So, no 2nd EtherREGEN!
  2. Question: what did the Farad replace to power the EtherREGEN? Looking at the picture: don't you think it is wise to not place the Farad's directly on the Denali and so close to each other? I have been told that it is best to keep a minimum of 20cm distance between components with toroidal transformers.
  3. Good info. I wonder if anyone did compare Supra CAT8+ with the Ghent JSSG360.
  4. Thx. Very detailed and useful. One question: which AC cable do you use with the Farad?
  5. Again, please explain what about this information is wrong. My perception is that it doesn't focus on tone or sound qualifications but mainly on electrical properties of materials and connection types. Interesting that you are an EE because then you probably can help me with my initial question: if a pure copper (100% IACS) connector is direct electroplated with a rhodium layer (38% IACS), does this mean that the overall conductivity of the connector becomes 38% IACS?
  6. Please, explain, I am all ears. The article is written by an electrical engineer by the way. And it disqualifies Rhodium as a good material for plating audio-connectors, not a typical audiophile standpoint.
  7. I found a really nice article on plating that gave me the answers I was looking for. An excerpt for those interested: -- Copper is often coated to keep it from oxidizing. This is necessary, since, as is generally known, it tarnishes quickly, as anybody can see by taking a glance at the copper façades of buildings – the brown, matte material to be seen there is copper, the reddish shine of which will subside to the brownish colour of copper oxide within a few days. And copper oxide is a bad conductor. Similar happens to brass – everyone knows brass artifacts which show a patina, which is nothing other than an oxide layer. Thus, materials which are less prone or even inert to oxidization are being used for plating copper or brass, like tin, nickel, or gold. But also silver. Silver protects the carrier material from oxidation too, but will oxidize itself in the process. It is still a material of choice for plating electrical contacts, since silver oxide is a very good conductor, too, if not quite as good as silver itself. That is why silver plated contacts are best cleaned regularly, or protected by means of a contact enhancer. Gold plated, silver plated or pure copper wire end terminals? Gold is a lesser conductor than copper, by 40%. So, gold plated copper is no better, electrically, than pure copper. Still, there are gold plated pure copper cable end terminals, which are in turn worse than silver plated cable end terminals. Since the un-plated pure copper terminals oxidize over time, gold plated terminals will sooner or later be superior, since they do not oxidize. However, silver plated cable end terminals are the best choice, because they keep their superior conductivity even when oxidized. Rhodium plated plugs? Rhodium is a precious metal from the platinum family. It is hard, acid-resistant, and has a very high melting point (1964°C). Compared to other platinum metals, it is a very good conductor, but still only half as good as gold and just one third as good as silver. Therefore, it is misplaced as a coating in a domestic environment. Its sound characteristics are often described as harsh and analytic. It does however have its justification in industrial environments with high temperatures, for instance near blast furnaces, where it reliably does its job at temperatures where gold would already start to melt (which it does at 1064°C). Nickel plated or “naked” brass? Standard brass (40% zinc, 60% copper, CuSn40) is about as good a conductor as nickel, as long as it is not oxidized. With oxide layer, it conducts worse. However, the sound is “smoother” without nickel – therefore, naked brass plugs have a justification, as long as the listener is prepared to clean them regularly. The necessity to do so can be removed by silver or gold plating. Plugs from phosphorus bronze? Phosphorus bronze is a quite hard material and is held in high esteem for its tonal virtues when used for church bells. However, it is a lousy conductor. Nevertheless, there are now Japanese plugs in the market, which are made from phosphorus bronze, and bear price tags that were unseen before. I have not tried any of these yet, but am quite skeptical based on the aforementioned reasons. Plugs from beryllium copper? Beryllium is a highly toxic element. Beryllium copper is a (non-toxic) copper alloy, just as brass or bronze, and is the best conductor among the copper alloys. However, it is still much worse than copper itself. It has remarkable qualities for tools, and because of its springiness it is being user for the balance springs in mechanical watches. Because of this property, it is also a very fine material for banana and BFA plugs, where the quality of the contact depends on how tight the plug will sit in its socket. However, it is misplaced in mains plugs, where we have massive pins, and where the material cannot draw on its elastic properties at all. If looking for a material with better conductivity than brass, pure copper or silver would be the material of choice here – the two are not only better, but also cheaper, and non-toxic in the production process on top of that. Solder or crimp? Copper’s conductivity is six times higher than tin’s! Fine solder typically consists of more than 60% tin. Thus, a gas-free crimp connection is always preferable to a solder connection. --
  8. Metrum Adagio, Metrum Pavane, Aqua Formula xHD, Aqua La Scala mkII. And perhaps Totaldac and Lampizator but I have no experience with these brands.
  9. These five episodes of the Taiko Audio SGM Extreme review were a very interesting read and kudos to @ray-dude for the very thorough review and write-up. While I am also striving for a minimalistic and pure system with the use of reference type components (for instance, I also chose a Chord DAVE because of the characteristics Ray describes) I still don't really understand the path of choosing a computer based system (server) this low in the stream. Computer hardware is very noisy by design. In normal appliances this doesn't matter so much but in audio systems it does. In fact, a lot! In my opinion the Taiko Audio SGM Extreme is so extreme and expensive because it has to fight the evil that is caused by itself in the first place. Does this formulation make sense? Personally, I think it is more wise to invest in isolation and clocking. And to keep server and streamer hardware separate and - in networking terms - far from each other with typical computer HW like SSD's, IO busses, graphical processors etc. high upstream. Additionally, computer hardware is evolving at a fast pace. If I am not mistaking, the SGM Extreme is already the third or fourth iteration of Emile's / Taiko Audio's / Sound Gallery's attempt to create the best server possible. Next year you have to buy an Extreme ultimate or the Extreme SE to be up-to-date again. This is certainly not an attack but a personal insight. I think the same about initiatives from Grimm Audio, Innuos and Melco to name a few. For the above mentioned reasons, I chose a 'brick wall' setup with an Uptone EtherREGEN followed by a dCS Network Bridge (streamer) and the Chord DAVE (DAC). In this setup the quality of the (downstream placed) server is of a lesser concern.
  10. Thank you for your contribution but I am searching for the answer to my question. I know about the characteristics of the different plating materials, my specific quest is for the (scientific) implication of plating on conductivity. And actually copper doesn't oxide fast at all in dry conditions and at normal in-house temperatures. That is why Cardas, Mundorf and others have pure OFC copper binding posts, spades etc. in their portfolio. Cleaning the connectors once or twice per year will be enough to have excellent contact behaviour.
  11. The info you link to explains why rhodium is such a good material for plating but nothing is said about the electrical conductivity implications of the plating. Most manufactures somehow explain why they choose plating material x over y but leave it there. I actually found one stating they only use silver because it is the only material that has a higher conductivity than copper, protects the copper from oxidation and that the tarnishing of silver has no negative effect on conductivity, it only makes it less appealing over time.
  12. Suppose a Schuko connector with all contact material made of pure red copper. What influence does direct electroplating of this contact material with nickel, silver, gold or rhodium have on the overal electrical conductivity of the connector? Knowing that the conductivity of pure copper is 100% IACS, what - for instance - is the influence of rhodium plating with rhodium 'only' having a conductivity of 38% IACS? Does this mean this mean the overall conductivity of the connector also becomes 38% IACS?
  13. The same Hans that says that the oR offers four times the SQ of the mR... 😂
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