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SwissBear

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Everything posted by SwissBear

  1. I am using HQPlayer to adjust volume
  2. Sorry for the late answer. Been busy trying another DAC of interest (Gustard x26Pro) :-) I reconnected the SDA-6, used my SU-2 to generate an AES/EBU flow from my USB output. In HQPlayer, I chose DoP at 64x44.1k Everything if working well. Is this the test you were looking for ?
  3. This is a good question :) I don't have the answer. You can ask on the forum which "Science" in the name. A guy from Gustard is answering questions there, and can be reached with @gustard. Although you might be informed that they have a strong cultural bias against 10 MHz clocks over there... I can only share my own experience: this DAC offers a good implementation of 10 MHz clock signal, in the sense that the input of such a clock signal really is audible and favorable. Just my 2c and my experience, on my system, with my ears :-)
  4. An interesting review of this DAC: https://soundnews.net/sources/dacs/gustard-x26-pro-dac-review/
  5. Hi Tavy, Thanks for sharing your comments and difficulties. I have not tried the AES/EBU interface myself. Are you using any external clock signal when feeding AES/EBU ? Will try go give it a trial next week and report.
  6. Congratulations to both of you. Hope you will enjoy your new DAC as much as @patatras and myself 😊
  7. Yes. And the SDA-6 too: https://shenzhenaudio.com/products/singxer-sda-6-primary-direct-solution-cchd-957-femtosecond-clock-of-usb-nos-model-dsd512-ak4499-dac-decoder They claim they are having a sale this week.
  8. Antonio, I'm really not a big fan of the solution you are proposing. As has been largely discussed by eminent professionals in this thread, the subject of reclocking or getting a better clock signal that the one provided at the DAC is a difficult subject. The SDA-6 already has excellent clocks at the USB input and doing a better job that these internal oscillators requires a very high level clock, which I am not sure the hat reclocker has. In case you are really sensitive to the benefits of high precision clocking, I would suggest you save your money and buy a good clock in the
  9. Hello Antonio, It's kind of a difficult question, as the answer very much depends on your personal taste. Had I not purchased the SU-2 prior to buying the SDA-6, I would probably not have bought one, because the USB input of the SDA-6 is already very good. Adding the SU-2 gives a little bit more of aeration in the highs. But not to the point that this is a must, like on other DACs which USB input are notoriously bad. And you already have a device which has the reputation of having a good galvanic isolation. So start with the SDA-6 and enjoy :-) Just my 2c
  10. If you allow me to nuance your statement, Leter from Singxer does actually answer emails. It takes time, because it's a small company and the guy is super busy, but in case the matter is of importance, he does answer. To illustrate this, when I received my second SDA-6, the external clock input was not working as expected. When the external clock was locked, the music stopped. This was quite unusual in terms of failure. I had to discuss this with Leter, and he kindly instructed the reseller to change the DAC without further question. I would like to take the opportunity of this narr
  11. Yes you're right. In the SU-2, there does not seem any XMOS chip is involved in the process of USB. It seems all FPGA based. In the SDA-6, an XMOS chip is in charge of the USB interface. Results is quite different IMO.
  12. I noticed that AO3.0 is removing TCP/IP v6 services, which are essential for Diretta (https://www.diretta.link) to operate correctly. You might want to make a note of this in a future version of the user manual and propose a way to reactivate those services through REGEDIT. Thanks
  13. If @Superdad or @JohnSwenson want to have a look at the SDA-6 layout, here is a picture of mine :
  14. Unfortunately not. The limit through USB input is 384k. Through I2S and SU-2 you can attempt 768k. As @patatras noticed on his SDA-6 and as I noticed on the second machine I bought for a secondary setup, DSD 1024 is not guaranteed. It works on my first machine but not on the second one.
  15. Interesting question judging from the results. The implementation in the SDA-6 is quite different, probably more in line with what you would expect (synthetizer). Difficult to judge from the layout as the clock part of the board is under a large "Femtco Clock" cover...
  16. I understood you had decided not to intervene anymore. I am surprised to see your further comment. Your behavior deserves more compassion that anything else. For the purpose of record I do not dislike you. I do not appreciate the way you judge people and things, which is very different. From now on, I will use of my privilege to cancel your contributions here. Thank you for your understanding.
  17. I do not appreciate your ad hominem attack. This is very disrespectful again. I celebrate your decision not to intervene here anymore. Thank you for that.
  18. I already have a guardian angel and I do not need a second one. Thanks for trying to use your skills in French to guarantee the alignment of my positions of both fora. I am not sure there is a need for that ! I have a difficulty when someone has no experience and not ever listened to a product or technology and is busy trying to discourage the other ones to make their own experience with this product or technology. When you argued against Diretta saying that this product was just a way to correct for unreliable implementations of USB at DACs ()your own word ar
  19. Not sure what your intention is with this post. I personally have no agenda. I am sharing what I hear and I do not need any backup or explanation. And I am certainly not trying to convince anybody to buy an expensive clock if this is not what they are willing to. I observe that there are a lot of places in this forum where people explain their enjoyment of adding high precision clocks to their setups and especially in connexion with the EtherRegen. I have not observed that you tried to dissuade them to make such kind of stupid decisions if this is you mission. You might want to ext
  20. Hi Alex, Thanks for sharing your investigations and suppositions. What I always find more interesting than suppositions, is measurements and listening experience. In this post: I shared measurements made by l7audiolab which clearly show that even a middle class 10 MHz clock (Gustard C-18) had a positive effect on the measurement of jitter at the output of a DAC which was driven by a SU-2. I have had an SU-2 in my setup for some time now, driven by a Mutec REF-10, and I can assure you that this 10 MHz clock leads to better results than the oscill
  21. SDA-6 does not have a volume button. You can adjust the volume using HQPlayer as I am doing. Alternatively, you can use a small preamp. Singxer has one which is quite cheap and good. SA-1 if I'm not mistaken. See here: https://translate.google.com/translate?sl=zh-CN&tl=en&u=https://www.l7audiolab.com/f/measurements-of-singxer-sa-1-headphone-amppre-retail/
  22. I'm not sure. What I noticed with my experience with I2S is that the inability of some DACs to not use their PLL was making the use of an external clock less productive. But with AES/EBU, PLL seems to be necessary as we need to correct for the jitter introduced by the cable if I'm correct.
  23. Hi Jean-Paul, There is unfortunately not much we can do in order to optimise the OS. The last versions of Mac OS render these optimisations cumbersome and not practical. I just removed all the services I felt were not necessary (automated upgrade aso...). I have no experience using Hijack and Loopback. I simply use this machine to execute HQPLayer and that's it. It's headless and I access it via screen sharing, using VNC Viewer on my Mac (as I find it more reliable than the standard Mac OS tool). Hope this help :-)
  24. if you already own the SU-2, you are not far from getting the answer though. You can just find an AES/EBU cable and listen for yourself.
  25. It’s quite easy to organize blind tests in this matter. Turning the clock outputs on and off is easy and the front end of the clock itself can be hidden with a carton sheet. I did this several times with my wife and with audiophile friends on a one to one basis with the same unequivocal results. The presence of the clock signal was detected and highlighted. I could not make double bind tests due to sanitary restrictions though. And I doubt I will make any in the future, as I am not making scientific claims which would deserve such organization.
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