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barrows

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  1. Sure, agreed. Of course there are some (I am not one) who believe any requantization of PCM is a "problem". As with remodulation for a single bit format, how well it is done is what appears to matter to me. Therefore, the existence of HQPlayer.
  2. Yeah, semantics... I would say that it is important to know if the sample rate is being reduced to PCM like rates for DSD input, as many would consider that a step backwards (depending on the rate). Some DACs do this with DSD input... I am not concerned about the modulator steps, given really good modulator design (which I have no understanding of, but it does appear to be a non-trivial aspect of DSD oversampling) and enough processing horsepower to do it right.
  3. Yes, so then we are back to a semantic question. If we accept Roon's answer, their "direct" conversion for oversampling DSD involves two passes through a modulator, to go up to 64 bit, and then to go back to single bit. While the sample rate is never converted (reduced) to typical "PCM like" rates... this is similar to how the ESS chip appears to process DSD (except it probably only goes to 32 bits). So not exactly "pure" from a DSD purists point of view, but if the modulator design is as good as it can be, likely not an actual audible "problem" either. And it would allow for DSD volume control if Roon would allow it (they do not, they say because of latency issues). @Miska, does HQPlayer oversample DSD in a similar fashion?
  4. Yeah, just looks like pro MQA propaganda disguised. I would choose Qobuz if I was in the market for a streaming service strictly based on the capability to stream un-doctored legit hi res...
  5. Hi folks, there appears to be conflicting information out there, and I am confused and looking for some clarity. On the one hand we have some learned people claiming that DSD cannot be oversampled without an intermediate "PCM" step. (I guess we need to define "PCM" for sake of this discussion as any multibit step?) On the other hand we have Roon DSD oversampling which claims to be direct, with no PCM step-and indeed, when we look at what Roon indicates when oversampling DSD, there is no step showing multibit. I believe HQPlayer makes the same claims as oversampling DSD without a PCM intermediate step. So perhaps there are two questions here: 1. What really is a PCM intermediate step defined as? 2. Do Roon and HQPlayer actually oversample DSD (say DSD 64 to DSD 512) without a multibit (PCM) step? @Miska and @mansr are probably the experts who can clear this up for me. While I am not really a DSD "purist", and my feeling is that even an intermediate PCM step is likely inaudible if at a high enough rate and with good enough modulator design, it would still be nice to know exactly what is happening to DSD when oversampling it.
  6. Just to be clear, I would suggest using a optical cable for the longest cable in one's set up, as optical has lower losses than electrical, and also cannot pick up any noise along the way.
  7. I would suggest that indeed this is weird. I have not found this to be the case, and the official word from Sonore is that optical fiber cable length does not matter for sound quality (at least up to a kilometer!). Although I would always recommend that folks run the optical cable for the longest run, as it is immune to interferences and signal degradation over much longer distances than copper based Ethernet.
  8. To be clear, the orientation I use is with the "S" to the inside (middle) of the chassis and the "R" to the outside of the chassis. In this orientation, AC current flows in the S side of the fuse and out the R side of the fuse. Of course this is AC some none of it really makes sense at all! But there is something going on...
  9. Yes. I orient all SR fuses this way when I install them in both the Sonore Power Supply, or in the Signature Rendu SEoptical. If one is looking down at the fuse drawer, from the back of the component, the fuse will read SR from R to L. SR Blue fuses are available as an option at the time of purchase for the Signature Rendu SEoptical and Sonore Power Supply.
  10. Interesting. In the Sonore Power Supply, which "way" is the fuse: that is looking form the top down at the fuse drawer, which way does the "SR" logo read? right to left, or left to right (and upside down)? My suspicion is that the directiony Synergistic zaps the fuse with its tesla coil, + to -, (high voltage DC) is the right way to orient it...
  11. Room cost is a small portion of the overall expense of a show for an exhibitor. RMAF is outside the city of Denver as well (about 20 minutes to downtown). I am well aware of where O'Hare and Axpona are in relation to Chicago proper. Although getting from Axpona to downtown Chicago is a little more problematic than getting form RMAF to downtown Denver traffic wise. But also consider, that many exhibitors will be going into the city for dinner with distributors/dealers at least once. A trip to Chicago, or Denver, without going into the actual city for dinner with clients would be unlikely for most (and a shame, as both cities offer some excellent dining). Attending a show is a totally different thing from exhibiting. There are certainly more affordable rooms to stay in for attending RMAF is one wants that experience. .
  12. I am not sure what you mean here on expenses? How can flying to Chicago be any different than flying to Denver? From where? And Chicago is a much more expensive city than Denver when it comes to expenses (restaurants and lodging)? Now the new venue for RMAF is more expensive than previously, but it is also much, much nicer a place to go! More pleasant hotel, and the rooms actually have much, much better sound and are much easier to set up a decent sounding system in. Anyway, this is really getting off topic! Sorry folks... The only thing I will say on this in conclusion, is that as an actual Exhibitor at RMAF this year, we (Sonore) prefer the new venue despite the additional expense. I just want to see it go back to three days, as that is enough.
  13. I am well aware of that, although, of course this was not always the case... I was only using it as an example. I do not really understand dealers exhibiting at audio shows like these, as they already have a physical presence in the region and the ability to demo gear at any time. Nevertheless, there were plenty of dealers exhibiting at RMAF this year. It makes more sense for audio companies to me, to be able to make relationships with enthusiasts, and spread the stoke of good sounding gear. Attending shows is also good to de-bunk much of the audio mythology which way to often is spread about on the Internet; things are much more real in person!
  14. Yes, it is OK and recommended to leave it powered up all the time. If you are concerned about the heat, I would recommend a 7 VDC supply. It will also more easily dissipate heat if it is blocked up a bit to allow airflow under the case.
  15. 1. (VDC should be OK for the oR, but watch the heat and ambient room temperature. The Sonore Power Supply is ideal for it and has 7 VDC output. 2. Yes, the oM will benefit from a really good linear power supply. The reason for this is that the onboard clock (a Femto level part) will perform its best with perfectly clean DC. But no need to "worry", enjoy the music for awhile, and upgrade that power supply at your leisure!
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