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SwissBear

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Everything posted by SwissBear

  1. SwissBear

    HQ Player

    A short return of experience on the Mac Mini M1. I noticed that it was helpful for me to relocate Roon on my NAS, and to dedicate the M1 to HQPlayer. As I have quite heavy convolution, I noticed that this was helping the fluidity of the experience ; now DSD 256 with ASDM7EC is easy, even from 96k or DSD 128 files. The only remaining problem for me is 192k files upsampled to DSD 256 with EC modulators.
  2. Thanks Jussi. It was more about lowering the power usage (80W vs 125W) in order to move to a LPSU if necessary. Any idea about Intel vs Ryzen and Windows Server vs Windows 10 ?
  3. I am considering building a PC (probably with dual boot Windows and Linux) for HQPlayer, to use as a server together with a NAA. When looking at the performances displayed, it looks like may cores are idle. So is there a point to buy an i9 10900K vs i7 10700K ? Would a Xeon with even less cores be an option ? Also, is there a preference for Ryzen compared to Intel ? Which model then ? Finally, what are the minimum specs for a graphic card (I am not playing games) just to offload some processing to the GPU) ? On the French speaking forum, many users are advocating
  4. I guess it will be interesting to read the listening report from @patatras when he finally gets his SDA-6. He still owns another DAC he is very happy with, and has a very good installation with Roon+HQPlayer+Diretta as well as very well trained ears, as he has received a classical music education and taught music himself. Wait and see what he thinks about HQPlayer filters and NOS mode of AK4499 :-)
  5. Hi Jussi, Congrats for the perf of this build. Would you have a typical config (mobo, memory, aso) you would like to share with us ? Thanks in advance :-)
  6. Yes, until you remove the SPSU, which is soldered to the board. You can test like this and finalise the surgery afterwards. I have posted pictures here a long time ago :-) Before: After:
  7. Same experience here. Removing the SPSU and powering my MC-3+ USB with a rail of my Paul Hynes led to a significant improvement. Up to the point where I only needed one device, which I used to transform the asynchronous USB to synchronous SPDIF. Further reclocking did not appear useful to my ears. [EDIT} But I would like to add that a further game changer for me has been the move to HQPlayer, its upsampling to DSD 256 capabilities and the switch to a DAC fed in I2S with a Singxer SU-2 interface, the SU-2 bieng clocked by my REF-10. This is where my Mutec REF-10 SE120 really started
  8. Hi, Have you talked with Pasternack (https://www.pasternack.com) ? They have good RF specialists who might be able to help you find a technically sound solution. I asked them about 50 Ohm and 75 Ohm cables and they were very helpful.
  9. Then I would move to the MC-3+ USB if I were you :-) Add to this that you will enjoy a coherent timing of your system when you have the external clock, as this will allow you to clock the EtherRegen and the MC-3+ USB with the same clock. Be aware that SU-2 requires a 50 Ohm clock input. Both MC-3+ USB and EtherRegen require 75 Ohm clock input.
  10. Yes it is. What is the input of your DAC ? Are you planning to stay away from DSD and I2S inputs in the future ? If you intend to stick to AES/EBU, MC3+ USB probably is an upgrade compared to SU-1. If you plan to move to DSD, at resolutions exceeding DoP/DSD64 which AES/EBU can handle, and would like to enjoy HQPlayer with full functionality, or move to a DAC with an I2S input, a move to SU-2 would be wiser IMHO.
  11. Hi, My experience with D90/SU-2 was hectic. Combined with HQPlayer, this setup was producing large clicks/pops when changing formats or sample rates. This damaged one of my tweeters so I had to send the D90 back. Apart from that, I noticed a presentation of the sound which was vey detailed, but a little bit matt for my taste, as much as the x-Sabre/SU-2 was very detailed but a bit bright for my taste. The SDA-6/SU-2 is right in the middle, just transparent sound-wise. A lot of air and instruments separation too, whether the SDA-6 alone or in connexion to the SU-2. I have a sligh
  12. The discussion with Jussi was related to external 10 MHz clock inputs in general. A measurement of a cheap OCXO at the input of an SU-2 has been posted above. It's not strictly "external" 5V. But a friend of mine opened his SU-2 and applied 5V. Seems easy to do. I do not have any experience with the SU-1. I compared the SU-2 to my MC-3+ USB in AES and I have a preference for the MC-3+ USB. I found it more transparent. I did not notice any lack of transparency of the SU-2 in I2S mode though. For clock applications, there seems to be a concensus that square w
  13. The clock input impedance of the SDA-6 can be adjusted to 50 or 75 Ohm. For the SU-2 it is 50 Ohm only.
  14. As detailed in the specs, SDA-6 supports PCM 384 and DSD 512 through its USB port. Together with SU-2, it supports PCM 768 and DSD 1024. Both are supported in NOS.
  15. Thanks to you @luisma. It’s very joyful for me to notice how many new DACs now have this same NOS feature as SDA-6 and Holo range. To name a few recent releases, Gustard X-16 and X-26 Pro also do. I see this as the acknowledgement of the interest of HQPlayer and its asynchronous up sampling model :-)
  16. Well, the SDA-6 Pro has the same oscillators on its USB input. So I don't think that this SU-6 would improve things in terms of clock. It could obviously improve things in terms of galvanic isolation though. But I would personally favour the SU-2 which is cheaper for this purpose, and add an OCXO at 10 MHz. Prices for such 10 MHz clocks start around 100 USD on the Chinese market. As you can gradually improve the quality of this external clock if you see fit, until you are satisfied... Just be careful if you follow this path to chose a clock which has a 50 Ohm impedance output, as this is what
  17. Hi Jussi, Thanks for stopping by. I would love to make those measurements and contribute to a better scientific understanding of the influence of 10 MHz clocks on the behaviour of audio systems, independently of the marketing discourse of suppliers. Unfortunately, this will not happen at this stage as I have not been able to convince myself that this was part of my hobby to invest into costly measurement devices. Access to gears such as APx555B is limited, and the local reseller even refuses to rent me one as I am not a potential buyer :-) And the guys from Spectral Measurement
  18. It seems that the clock input of the Brooklyn DAC+ is a World Clock and not a Master Clock. The World Clock is intended at synchronising multiple instances of the DAC in order to process more than 2 channels. You will probably have to convert the signal of any 10 MHz clock into a World Clock signal (multiple of 44.1kHz or 48kHz) in case you want the Brooklyn DAC+ to be used as slave... That's what I understand from their user manual anyway :-)
  19. Hi @pavlos, Thanks for your questions. You are touching one of the subjects where it is very difficult to advise: the aesthetic of the sound produced by the DAC... Not knowing your tastes and qualities of your systems, this is difficult for me to comment... I tried to describe the sound produced by the SDA-6 as transparent, ie less bright than the ESS implementations I have listened to, and less matt than other AKM implementations. Having said that, as @w1000ipointed out, Singxer has produced a well designed output stage, which sounds very well IMHO. You can
  20. Having been an early adopter of Mutec REF-10 in my system (2017), I have since then been working out to implement high precision clock signal at every step in my system. As explained here (https://audiophilestyle.com/forums/topic/61753-singxer-sda-6/), I have recently changed my DAC, implemented a USB -> I2S interface with an input for my REF-10, and noticed improvement which are not only noticeable, but also measurable. I then received an EtherRegen which I connected to the REF-10 and noticed a further improvement. My gut feeling is that, putting all the elements i
  21. SwissBear

    HQ Player

    +1 with you Lory. Very happy with 4.9.2 too
  22. A few listening impressions from this week: - the DAC has progressed very well since I received it early this week: it has been sounding more and more natural by the day - the I2S input through SU-2 seems to offers slightly more galvanic isolation than USB input in my opinion. When connected directly to the output of a computer (NAA for HQPlayer), I have a preference for the SU-2 -> I2S -> SDA-6 solution. The piano keys of Claudio Arrau are flowing very naturally... When connected through another device, like SOtM tx-USB, both inputs (USB or I2S through SU-2) are on pa
  23. You can only infer that if you know exactly the measurement conditions. The noise floor is a direct function of the number of samples used to build the FFT (FFT gain). So until you know that l7audiolab and Singxer have used the same number of samples, you can not compare the measurements. At least this is what I understand... This is also a reason why it was useless to compare with Jussi's measurements... I corrected this in my post. Thanks to Chris :-)
  24. A precision: the test is made with an R2R DAC and not the SDA-6 as this is made clear in the Chinese post :-)
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