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genjamon

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  1. Alright, I just installed the mconnect lite app, and it appears to connect to both Tidal and Qobuz just fine, and to play through the UR. I guess I'll just use that for the time being until Linn's apps start working again.
  2. Anyone else having problems for the past couple days with accessing Tidal through Linn Kazoo? I'm a longtime owner of the UltraRendu and have been using it with Linn Kazoo/Tidal for 2-3 years now. Have had little issues in the past that were usually cured by restarting the UR or restarting the MPD/DLNA in sonicorbiter. Those aren't working this time. Two days ago I suddenly lost catalog access to Tidal in Kazoo. Trying to log in to Tidal produces long wait screens and it never logs in. I just resubscribed to Qobuz to give that a shot, in case it was an issue with Tidal, and no luck there either. Is Kazoo broken? Or is this something with UR settings? About a year ago I gave Qobuz a try with a one month free trial. About a week into that free trial, I had this same kind of thing happen. After a couple days of trying to troubleshoot to no avail, I switched back to Tidal and it worked fine. I unsubscribed from Qobuz and went on with my life. At that time, I even inquired with the support people at Qobuz, and they indicated they had made an update to their catalog accessing code and that it might be that Linn had not updated Kazoo yet to be compatible with it. But I was a bit suspicious of that explanation, because I didn't see anyone else complaining on forums about it like I would have expected, given the number of people using Kazoo and Qobuz. Now it appears the same thing has happened to Tidal, and Qobuz still won't work with me. Anybody have any ideas what's going on here?
  3. Actually, the shielding doesn't cover all effects. Star quad still benefits in rejecting magnetic interference beyond what shields can do, or so says Benchmark: https://benchmarkmedia.com/blogs/application_notes/116637511-the-importance-of-star-quad-microphone-cable Quote: ELECTROSTATIC SHIELDS DO NOT BLOCK MAGNETIC FIELDS There are a variety of different balanced microphone cables on the market. All microphone cables are designed to provide shielding against radio-frequency (RF) interference. The conductors are twisted and then wrapped with foil, a spiral of copper wires, or with a full copper braid. Of these, the braided shield is the most effective against electrostatic RF fields. However, none of these electrostatic shields are effective against magnetic interference. They are not magnetic shields! Foil or copper shields cannot block the magnetic interference produced by devices that are relatively close to the cable. Magnetic fields easily flow through foil and copper shields causing interference. STAR-QUAD CABLES PROVIDE MAGNETIC IMMUNITY
  4. Ok, after 8 pages of debate about the best way to tighten a screw, I have something actually substantive to report regarding sound quality impressions and DC cabling. I've just finished a somewhat extended comparison between short (<6") cables made with 12awg solid core from the hardware store ($.69/ft) both with and without Kemets on each end. This is between my LPS 1.2 and UltraRendu. So, it's a bit simpler system than some of the others discussed on here. I do have a LDover LT3045 board in the house, but haven't yet hooked it up. I wanted to get a handle on my preferred cabling first, and plus, the LPS 1.2 output is already driven by a LT3045 regulator. So, at risk of starting yet another front here, I"m actually not digging the Kemets at all in this setup. I gave them 48 hours of continuous use, and in three listening sessions throughout that period (immediately upon plugging in, after 24 hours, and at the end of the 48 hours) my impressions remained consistent throughout. It sounded like a haze was over the full frequency spectrum of the music. With just the raw unadulterated 12awg wire, I get more micro detail, clarity, realism throughout. My first thought when I first swapped to the Kemets was "where'd my dynamics go?!". Now, I'll acknowledge a certain smoothening of any sibilance in my system, and I can see how those with tinnitus and/or bright systems could benefit from the haze the Kemets added. In Charles's case, using a LPS-1 and MicroRendu, which I am very familiar with, I wonder if it's not a better synergy. And maybe the Kemets are providing more benefit over the LPS-1, but the LPS 1.2 may not need the Kemets due to better output regulation. So, I'm not trying to say the Kemets are trash or anything, and I'm still interested in trying them when I put my LT3045 board in between LPS 1.2 and the UltraRendu. But at this point, the Kemets are not going back into the system in this configuration - no way, no how. I'm getting magic with the straight 12awg romex and will be happy to come back to this configuration if results are mixed with other experiments. This result is after living with and enjoying the Supra Cat8 w/JSSG for about a month before trying the 12awg solid core. I found the Supra Cat8 to be an easy improvement over my former DIY Canare 4s6.
  5. Since you have two LPS-1’s, I think you can run them in parallel to double the current to 2A at 5V. Given the latest report on current demands, that might be enough? Is it really limited to 5V? If it can take 12V, , then you can get by with less than 1A, and the LPS-1.2 would work. This is the case with my router. LPS-1 can’t power it, but LPS-2 can because of getting up to 12V input the router’s current demands are just below 1A.
  6. Cornan, can you describe your reasoning behind joining the shield loops of the two DAC cables? Why wouldn't just JSSGing them each individually be just as good - or even better?
  7. I found this interesting paragraph in Wikipedia on Heaviside: Between 1880 and 1887, Heaviside developed the operational calculus using p for the differential operator, (which Boole[10] had previously denoted by D), giving a method of solving differential equations by direct solution as algebraic equations. This later caused a great deal of controversy, owing to its lack of rigour. He famously said, "Mathematics is an experimental science, and definitions do not come first, but later on."[11] On another occasion he asked somewhat more defensively, "Shall I refuse my dinner because I do not fully understand the process of digestion?"[12]
  8. I think what we have here is a simple case of removing one bottleneck in the system and revealing another. If the noise of the regulator/output device is higher than that of the noise pickup in the cabling, I would agree with all of the skepticism expressed. But the quality of these regulators is now at a point that this is no longer true. These LT3042/45 devices are so low noise that now the noise being picked up in the cabling connecting to the load is the dominant feature in the noise profile, thus making all of these cable changes quite audible. A good biking friend of mine is a laser physicist who works with very ultra fast lasers, and their ability to test the speed of these lasers and their other characteristics depends upon low noise sensors. He laughs at me when I talk about the noise specs of our audio equipment, since in his carefully controlled lab environment he and his peers can't get anywhere close to 1uV noise threshold - he says the wiring picks up WAY more noise than that. What exactly is causing which effects - now that's a good question. And many ideas have been posited on this thread. We won't be able to do anything more than this silly game of trial and error unless someone with skill and tools actually properly tests systematically for the effects of geometry, shielding, dielectric, etc on rejection and/or filtration of electrical interference.
  9. @Quadman, what you describe sounds pretty good to me. As my own system has gotten more refined and the perception of music has fully detached from the speakers, I’d describe a very deep soundstage as well, and music usually coming from behind the plane of the speakers. Yes, I’m sure with more incisive and aggressive speakers, I could make the soundstage move forward, but I tend to reject the sound of these kinds of designs as overly emphasizing upper midrange and high frequencies at the expense of the all-important (to me) “power” region of lower midrange and upper bass that gives music its soul. By emphasizing the upper frequency transients, you can achieve attack that brings the soundstage forward, but I also have found that this flattens the soundstage to less depth, and brightens the sound to an unnatural and artificial timbre. In other words, I bet your system sounds awesome, and keep on keepin’ on!
  10. Supra considers their air infused dielectric to reduce capacitance of their wire. Capacitance is important to minimize in audio interconnects (i.e. at low frequencies) - correct? I realize this may not have anything to do with DC, but still thought your point about having no effect at low frequencies seemed off.
  11. Any chance this is similar to benefits from Litz wiring? I’m not too fluent in the specifics of Litz benefits, and maybe they’re just for AC and not for DC? But if they do apply to DC conditions, maybe that’s part of the story? Doesn’t that have to do with reducing skin effect? And the multiple sets of twisted pairs further twisted around each other might give us a similar benefit? Whether or not Litz effects are at work, my money is on this being a simple matter of better shielding and wire geometry for rejection of noise.
  12. Well, we have a ton of differences between our two implementations, so no need to even get into the different ears/different goals stuff. Just the differences you've explained are enough to make my head spin: Me - straight DC cable swap between LPS-1.2 and UltraRendu > USB DAC input - no further tweaks You - some kind of power supply > PoE > LT3045 > Canare 4s6 > iDefender > Singxer F1 > SPDIF DAC input These are very different power chains, feeding very different system implementations. The LT3045, iDefender, Singxer F1, and whatever DAC you have and its SPDIF input could all have impacts that change the nature of the impacts of this ethernet cable tweak. So yeah, not really worth comparing our impressions side by side and expecting consistencies IMO.
  13. Its absolutely not an apples to apples comparison. It’s been at least a couple pages back in the thread, not sure exactly, but the original initiator of this tweak Rob was posting on this thread claiming the evolution to the Supra Cat8 approach developed by Charles on this thread would not sound as good as the original suggested PoE adapters with cheap Ugreen Ethernet cable. He was saying there was something magical about the flat Ugreen geometry that was superior. I doubted him, but given that I already had the original referenced PoE adapters in hand, I splurged and ordered the $6 Ugreen flat cable to check his assertion. So, not intended to be apples to apples, since the claims of superiority were actually based in the differences. As for modding the PoE connectors, I’m not really interested in going further with that. But I am interested in adding an LT3045 in-line as Charles has done. I have one on the way to test.
  14. No, my meaning of “white wash” is quite the opposite. That of emphasizing transients, not a fully fleshed out sound of real instruments with real tone, etc. for instance, with guitar, an emphasis on the plucked string, but not much in the way of resonance from the body of the guitar which is essential to the tone of a guitar’s sound. My my suspicion is that this effect has its basis in an emphasis on upper midrange frequencies over lower midrange and upper bass frequencies - the frequency balance is out of whack. However, I also hear additional micro details within he sounds of instruments with the Supra that I don’t hear as well with the Ugreen flat. For instance, snare drum has more detail and decay to its sound, whereas the Ugreen/PoE combo blunts that detail and decay somewhat. So, I’m hearing both a better frequency balance, as well as better microdetail/resolution/refinement with the Supra. Sorry.
  15. Alright, I just finished comparing the PoE adapters with Ugreen flat 1m in between compared with ~.5m Supra Cat8 with two twisted pairs +V and two pairs -V, tinned conductors, plugged into cheap screw type barrel connectors on each end, and with JSSG ground wire hanging loose rather than tightly wound like Charles did. That’s how I read JS’s instructions, to leave it loose rather than tightly wound. This is between an Uptone LPS 1.2 and a Sonora Ultrarendu. Into a Lampizator Big7 DAC using the R2R PCM module. Streaming from Tidal. Results: absolutely no contest. Supra Cat8 clearly superior. Ugreen/PoE had good detail, but white washed presentation in comparison. Supra has more body to instruments, and more micro detail retrieval as well. Overall much more realistic portrayal and more musical. All effects are along the lines of what I have come to exoerience whenever noise floor is lowered in digital circuits, whether through DAC, streamer/computer, modem/router/switch, etc.
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