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About Miska

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  1. I'm looking at the DAC output, that's what you are listening. Not eye patterns on data cables, those are only useful for debugging problems. But I'm not into audiophile data cables. My data cables are standard things, USB cables are certified, and ethernet cables are also typical IT gear. I have some 10+ HQPlayer servers and some tens of DACs. Not going spend horribly lot of money playing with data cables on such. I get the objective DAC output performance I want with standard cables with ferrites. When all or most of the cabling is the same throughout all gear, comparing things head-to-head is also easier. My analog cables are Supra, in analog domain cables make more difference. And I agree with Supra design philosophy of minimizing capacitance on interconnect and minimizing inductance on speaker cables. And these are not horribly expensive either, and are made in neighboring Sweden. P.S. I think this thread has drifted horribly off topic...
  2. It is at least likely because the design has been tested to comply. Having proper QA is another matter. iPhones are also made in China, as well as lot of other stuff. I have Supra USB cable, but what I've tested I failed to hear any difference to a certified cable. So it is now in a storage box unused. It is easy to get normal USB cable with ferrite beads, or have correct type of snap-on ferrites added on normal cable. For my Supra it is not possible because the outer dimensions are not standard. Almost all of my audio use USB cables have ferrites, except USB3 cables (Holo Audio and iFi gear, etc). But I try to stick to objective measures. I'd be curious to see technical explanation what aspects and how they make it perform better sonically and/or measurements from the DAC output that show this difference.
  3. Yes, of USB-IF, it is trademark to avoid people from randomly slamming it on something that has not passed the specified tests. Same goes for many other things like DLNA. Certification processes is not so different from FCC or similar... Or if you want to back yourself in electrical safety for CE marking, something like TÜV or FI approval. Similar approval / certification processes also apply to devices like mobile phones. The certified cables I have cost between 10 and 20 EUR, so I don't hugely mind if part of the cost goes to the certification process. But when the cable has that badge, you know it complies to certain set of specifications.
  4. Miska

    HQ Player

    I would say sinc-L, but one can try and compare...
  5. If there's a setting to set the DSD filter corner frequency, it is in bypass mode. But it could be that they are using the DAC chips volume control and that's why it is not in bypass mode. It should be same as pcm to sdm. And same as if you set dsd_6db="1" for sdm to pcm case. In bypass mode, AKM chips have DSD volume -3.5 dB lower than PCM volume when PCM volume is turned to 0 dBFS. Thus in such case, setting PCM volume to -3.5 dB produces same output level for both. sdm to sdm volume follows your HQPlayer volume setting just like the other cases too.
  6. What's wrong with Belden USB cable? Not that I have one. But I have Deltaco's USB HiSpeed certified cables. I still haven't seen certified "audiophile" USB cables. Many strange cable implementations outright violate the signal integrity and USB cable specifications, but cost a lot while doing so.
  7. Fixed now for next release. Seems like I have broken it. Note that the the uploaded filters are not deleted/cleaned up, since that's a bit complicated thing and I don't want to accidentally delete something that shouldn't be deleted. I need to think about how to manage existing filter files, maybe some new page where you can explicitly delete items you don't want and upload custom named ones.
  8. Ubuntu should work with secure boot too, but I have secure boot turned off. If you want to install with secure boot, you may need to set BIOS to provisioning state to allow OS installer to upload key chains.
  9. Miska

    HQ Player

    When looking at those Windows load graphs, it is useful to right-click the graph and select it to also show kernel/system times in addition to user space. This way you get better picture of what is going on. As long as latencies stay below millisecond range, they are unlikely to cause issues. Another aspect is how frequently the system hits the longer latency paths, and thus the cumulative effect. But those are shown to some extent through the system time loads I'm talking about above.
  10. If M.2 NVMe is big enough for you, there's no reason to go other way. For example Samsung 970 EVO Plus is blazing fast. And since it hooks directly to 4x PCIexpress 3.0 it is most direct-access storage method.
  11. Forgot to mention that OS is installed on Samsung 970 EVO Plus M.2 SSD.
  12. I only tried Windows to M.2. But also with Windows it doesn't work if you boot from ISO image. Only if you boot from EFI USB stick (created with the Windows media creation tool). It could be similar with Ubuntu as well, so the boot needs to happen through EFI. Was it Ubuntu 20.04 LTS? I would expect that to work, maybe 18.04 not. If that doesn't work, you could also try with Debian Buster and Fedora 32. With some embedded boards that have eMMC, I've needed to use Debian because they include the MMC drivers in default kernel.
  13. Yeah, I did 9900KS for that reason, with RTX2080Ti. It is also my Windows development machine. 10900K can do 5.3 GHz, but not all core full turbo. This machine was to replace my listening room Windows server (i7-6950X + GTX1080) with a new one. So wanted to go with the 10th gen CPU. The old one wasn't able to do ASDM7EC to DSD256, which was the reason for the change. No external GPU on this one yet, maybe I will add one when Nvidia comes with 3000-series. I already have two RTX20x0 on other machines. If I add one, I will need to switch to a bigger PSU too, the current one is just 520W, but fanless. Good this is that I managed to keep this one quiet too, also when running with more demanding loads. These big Noctua coolers are great! The 9900KS with beQuiet Dark Rock is not as quiet although that is also almost as huge cooler.
  14. Miska

    HQ Player

    Also note that HAPI cannot do DSD at 48k multiples, only at 44.1k. You could compare the clock figures to the stereo case to see if stereo case that doesn't have dropouts runs those few cores at higher clocks than here.
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