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barrows

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  1. Suffers from what, exactly? Sonore opticalRendu should not have any problems passing native DSD to DACs which support that format, and there should not also be any annoying pops or clicks when playing back DSD. BTW, there is no drawback to using DoP for days which require it, except for the limitation in available playback rate: using DoP has no compromise in sound quality.
  2. Ted, from my experience working at PS Audio, and taking part in measuring AC power at many different locations (including audio shows, and many employees' and customers' homes), I think it is really hard to suggest one possible "best" AC power solution, as the quality of AC power varies so much from location to location. For example, here at my place I have a line transformer which serves only my home, and my modest home has not much going on making noise on the line-that is not to say it is perfectly clean, but I find best performance in my system is with the least intrusive filtering or
  3. You are right, my bad, looks like a pretty ordinary (likely well implemented) LC filter there. I guess I was thinking of another Furutech product.
  4. I am not surprised that you prefer the Furutech. These Furutech units are passive, but they do use special materials which are able to absorb and diffuse quite a bit of RF energy from the mains, and the accomplish this without the use of any inductors or capacitors connected to the AC wiring-which can often cause sonic issues, even as they do manage to filter some noise. It is also important to realize that everyone's AC power is different, and a given approach to power conditioning which works well in one person's home, amy not work so well in another. But first, I often find that distribu
  5. Any DACs which have similar output voltage form their single ended and balanced outputs. Any DAC which has exactly half the output voltage from their single ended outputs vs the balanced outputs is almost certainly just using half of the balanced signal. In my previous post i left out another common way to do balanced to single ended conversion which also results in high performance from the single ended outputs: using a transformer. The transformer approach is used by Linn in the Klimax DSM, and by Lumin in the X1 DAC for two examples.
  6. Just to note, the above will not be true for any DAC which implements its single ended outputs in the optimum fashion. Pretty much all DAC chips, and all of the properly implemented discrete DACs (talking just about the DAC conversion section now) have differential output (balanced). (Let's assume current output DAC here) then that output goes to a balanced I/V stage, followed by a balanced analog output stage to drive the output. Dacs where the single ended output is half the voltage of the balanced output, just take half of the signal and leave the other half behind-this is a lazy and che
  7. Offering adjustable voltage is a compromise in performance, and in price and value. In our power supplies, output voltage is set by a single, very high precision resistor, to accomplish adjustable output voltage, many companies will use a cheap adjustable trim pot which does not have the same performance level as a single fixed resistor. There is no good way to allow for adjustable output voltage which does not reduce performance, and/or raise the price and reduce the value. So we are offering only fixed output voltage supplies. Right now all the power supplies we produce are capable
  8. I'll take over here for Jesus on the design and implementation of the Sonore Power Supplies. At Sonore we as a matter of policy do not comment on subjective listening results of our products, we prefer that users and reviewers make those judgements and anecdotal observations. We prefer to focus on the technical side of our products, and that is what I will discuss here. The Sonore Power Supply was designed originally to fulfill the need for a very high performance, linear power supply for the Rendu Series of products. We are now expanding the range of voltages, and in the case of the 1
  9. that is exactly my feeling of the Tambaqui every time I hear it: very detailed, but still entirely musical. It is a rare combination, and to me, suggests that the Tambaqui just gets things "right".
  10. It is not Sonore's policy to comment directly on anecdotal/subjective sound quality differences, but I am happy to point out the technical differences between these two options: 1. Signature Rendu SEoptical, and 2. opticalRendu + Sonore Power Supply + DC-4 power lead. The Signature has a number of technical advantages: It uses a custom, made in the USA, Mercury Magnetics, EI style transformer, which rejects more AC line noise, and costs 9x more, than the very good quality toroidal transformer used in the Sonore Power Supply. The Signature has additional AC line input
  11. Easiest way is probably to get a server from Small Green Computer which is already set up for running HQP embedded and Roon, and then go from there.
  12. @The Computer Audiophile, Thanks Chris for clearing this up. At Sonore we have not ever been able to test our Renderers (Signature Rendu, microRendu, ultraRendu, opticalRendu) at rates above DSD 512 and PCM 768 as we have not ever had any DACs on hand capable of higher rates. So our official rate limits only state up to the levels we have tested and confirmed to work. As Chris has noted, he has his Signature Rendu SEoptical working with his Denafrips test DAC at PCM 1.5xxx MHz, which is news to us. It does appear that the Holo Audio DACs have very specific USB requirements to meet thes
  13. I would suggest that things are not quite so absolute as this sounds. "Isolation" like this is effective at reducing noise getting across the barrier, and is used in most good DAC's USB interfaces, and many very good USB sources as well. But, this isolation is not 100 percent effective, there will always be some noise which makes it across the "moat" via capacitive coupling-this is likely why many persons using DAC's with well "isolated" USB inputs still hear some improvements with low noise USB sources. Each level of isolation will still make for some additional (although perhaps minute) d
  14. A couple of things to understand in general regarding the use of PLLs and DPLLs. The use of a PLL to reduce incoming jitter is nothing new, as PLLs and DPLLS have been used for a long time to reduce jitter in DACs. Additionally, there is nothing unusual about having a PLL circuit be active for USB inputs, this is common as well. For example, the ESS chips have built in DPLLs (a DPLL is a dual PLL, which operates at a wider bandwidth than a single PLL) and this is what ESS refers to as part of its "jitter eliminator" circuitry. What a PLL does is it adjusts the rate of the DAC clock, sl
  15. Ted, I am looking forward to more SQ observations from you. Specifically, I would like to know if you are hearing both more soundstage depth, and better layering of that depth (if so, vs. Spring of course). IOW, more different levels of depth... also, are you avoiding stacking the May DAC directly on top of the power supply? I would definitely separate them if so, as the filed strength of most transformers is going to be enough in the vertical to potentially create interference with the DAC via magnetic coupling in the vertical plane.
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