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SwissBear

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Everything posted by SwissBear

  1. SwissBear

    HQ Player

    Hi Jussi, I have made extensive listening with the new software and 2 DACs I have: one x-Sabre Pro and one darTZeel LHC-208. On both installations I noticed the quality of the experience I had with the ASDM7EC modulator in DSD 256, but I also noticed that I had a preference when I used a mode to input my DAC in PCM 20/196, which allowed me to go through a Mutec MC-3+USB to transform the USB flow into an SPDIF flow clocked with a Mutec REF-10. This is just a personal preference and absolutely not a judgement of the quality of the DSD flow produced by your code which is awesome.
  2. SwissBear

    HQ Player

    Hi Andreas, I notice that I did not reply to your question. I also notice that Jussi has covered most of your concerns. I would just like to underline the fact that my Mac Mini M1 has a PSU which is quite noisy electromagnetically in the sense that it is polluting some of the other equipments I have powered on the same rack. So I decided to put it in a place in my house where this is not a concern. But the performance of the machine, and the code produced by Jussi to make the best use of it are awesome :-) Hope this helps.
  3. SwissBear

    HQ Player

    Hi Jussi, Thanks for the heads-up on the PSU. Could you kindly be more specific and make a precise recommendation ? Thanks in advance :-)
  4. SwissBear

    HQ Player

    Thank you Jussi for taking the time to share you views on these subjects and help dissipate the fog. Much appreciated :-)
  5. SwissBear

    HQ Player

    Thanks for your explanations. Part of me, which received scientific training, and tries to understand physical phenomenon underlying my auditive perceptions, is grateful for these explanations which make perfect sense. Another part of me, which is subject to cognitive biases, has difficulties to explain why I have the auditive perceptions that the sound produced by my system feels better, with deeper bass, a better tri-dimensional image, aso, when using a device like the sMS-200 Ultra which reclocks an asynchronous music flow. I was expecting your answer, but wanted to make sur
  6. SwissBear

    HQ Player

    Two questions I would like to ask there: - can buffer ajustements inside HQPlayer settings help with this kind of difficulties ? I played with them but not in a structured way and did not notice any improvement. Are there recommended values ? - speaking of smart switches, there are a lot of audiophile switches on the market which are offering high precision reclocking to reduce phase noise of the Ethernet data stream. Have you been able to measure the jitter reduction of the output signal of the DAC which was linked to such devices ? Do you have any such switches in your own network
  7. SwissBear

    HQ Player

    Thanks for the tip. But I only have "non manageable" switches.
  8. SwissBear

    HQ Player

    I have a technical difficulty with an SOtM sMS-200 Ultra, when it is configured as NAA and fed with DSD 256: it is producing clicks and pops, and white noise from time to time. This device is working well when configured as a Roon endpoint and running the same resolution files. And when running another NAA from the same HQP server, things are working smoothly as well. Does anybody know if this is a recurrent problem linked to the implementation of the NAA client on the sMS-200 ?
  9. SwissBear

    HQ Player

    The limitation is not about the OS preventing upsampling. It's about using the Core Audio layers of the OS limiting the way DSD are handled through USB ports. When you use an NAA, you are driving it through the network (TCP/IP), and therefore not through the Core Audio layers of the OS. At least this is my understanding. AFAIC, it works very well up to DSD 512 with Roon and DSD 256 with HQPlayer and EC modulators.
  10. SwissBear

    HQ Player

    Mac's core audio seems limited to DoP (DSD over PCM). To enjoy full DSD, you would need an NAA. Miska mentioned he uses one of these: https://up-board.org/up/specifications/ with his NAA distro if I'm not mistaken. I am using an old Mac Mini with a Linux distro on it and the NAA software of Miska.
  11. SwissBear

    HQ Player

    Did you check this box ? See:
  12. SwissBear

    HQ Player

    I was able to replicate this behavior and isolate the source of the cracklings in my installation. The fact that we have an "off-the-shelf" solution for less than 1'000 USD including NAA, to run DSD 256 in stereo with the best filters/modulators available, seems to me a matter of celebration. Thanks for this native ARM 64 code :-)
  13. SwissBear

    HQ Player

    Did you also get cracks and pops ? White noise ? Any idea how to get rid of that ?
  14. SwissBear

    HQ Player

    I just tried. I kind of noticed that a 400 % load of HQPlayer was the threshold when clicks and pops started. And this is what happens with such oversampling filter. I did not stay long enough to evaluate fan behavior as this was not so pleasant to listen to :-)
  15. SwissBear

    HQ Player

    I spent the whole evening yesterday listening to music with HQPlayer in DSD 256. This was a great experience :-) I have to admit that I have been facing some small glitches, mostly clicks and pops, during this time. These were random, very seldom, and there were also very few periods of white noise. But compared to what other processors have produced in this field in my environment, I still consider this M1 machine as promising. I can only dream that we will find a way to tune the system and turn unnecessary services off (https://gist.github.com/pwnsdx/1217727ca57de2dd2a372afdd7a0fc21#gist
  16. SwissBear

    HQ Player

    Also Mac Mini and NAA have fixed IP address...
  17. SwissBear

    HQ Player

    Hi Jussi, With all due respect and without any attempt to contest your position which is not to validate the Mac Mini M1 as a viable option for HQPlayer oversampling to DSD 256, I would like to share my observations: - I have been listening to various input formats ranging from redbook to DSD 64 with the following setting: - I noticed a kind of “white noise” a few seconds after changing input format. When restarting the track, the restitution was exempt of any glitch for the following tracks - I would like to precise that my Mac Mini is completely headless (no screen no keyboa
  18. SwissBear

    HQ Player

    Hi everyone, To answer a few questions: - I mentioned upsampling D128 to D256 was flawless as this was the most demanding operation in the emulation mode - upsampling from DSD 64 to DSD 256 with ASDM7EC is flawless too... - my convolution is very demanding (524 ktaps impulses at 192 kHz) as I have to use a very steep filter to prevent modes in my room - consumption of resources is shown here: So congratulations and thanks again to Jussi :-)
  19. SwissBear

    HQ Player

    Whaoo Jussi ! Congratulations ! The Mac Mini M1 is able to upsample DSD 128 to DSD 256 with ASDM7EC and apply convolution. And switching from one song to the other is so quick and smooth :-) :-) I can't believe it ! Sincere gratitude for making this happen so quickly.
  20. Thanks a lot for your answer, which makes much sense to me :-)
  21. Is there an alternative which would be fanless or compatible with a fanless case ? What are your thoughts about dedicated USB "Audiophile" cards (SOtM and the like). As they are very expensive, are they at least useful ?
  22. @Miska: Hi Jussi, I observed that the jitter measurements you are posting are made with a reasonable level of upsampling in HQPlayer (PCM352, DSD 256 or DSD 512), and that you are sometimes precising that the measurements are made with your workstation, as an indication that there is no tuning on the music server side. Am I right ? I tend to infer from it that HQPlayer upsampling has a positive effect on jitter reduction at the DAC, even when feeding the DAC via its USB input. Could you kindly share with us some explanations about this ? Thanks, Pierre
  23. Thanks again to @wouterkfor answering my question. I have gone through most of the thread an I have noted the following: - At the beginning (say Rev1 of the Holo Spring), some users have attempted to feed the DAC through its I2S interface, mostly with Singxer SU-1, and notices improvement in the sound quality. This was partly attributed to better galvanic isolation and partly to better clocks in the SU-1 than in the DAC - From the beginning, some other users, @Miska in particular, have challenged this observation, publishing measurements of the jitter of the Spring in Rev 1 and
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