Jump to content

SwissBear

  • Content Count

    438
  • Joined

  • Last visited

  • Country

    Switzerland

Everything posted by SwissBear

  1. No preamp at this stage. The idea of NOS is to make all the DSP tasks asynchronously outside the DAC. Therefore you have an exact control of the filter you are using, and the way your files are processed. HQPlayer is a master in this art, and I warmly recommend you this software. If you have a preference to stick to Roon without HQPlayer, you can still use the NOS mode in making the upsampling inside Roon. You can also not upsample at all and use the NOS mode of the DAC to just process your files in their original format. I did not try this yet.
  2. I am living in Switzerland. But shipment time should not be very different. I ordered on Thursday, the DAC was shipped on Friday, and was delivered Monday the next week. Shenzhenaudio uses the services of DLH Express. Using the I2S input is a good idea. This allows to go up to PCM768 and DSD1024. I would like to mention that the integration of SDA-6 and SU-2 is excellent. With other DAC like the D90, I had very loud pops when changing sampling in HQPlayer. Together with SDA-6 things are very smooth. Back to your question, the upgraded version offers Crystek clocks you w
  3. Hi Matt, I described the sound signature of the x-Sabre with the ESS chip as a little bright for me. Kind of shiny and glossy. On the opposite, the D90 was a little matt. The SDA-6 is just transparent, at least in the mode I use since I received it, which is NOS. It's very relaxed and non aggressive. You can, as I do, listen to it for hours without being tired. Dynamics is excellent. I mentioned above that the output voltage could need some boost when playing DSD. On my AHB2 amps, if connected directly to the amps, I would put the gain adjustment switch to medi
  4. Hi, I ordered the advanced version. And I think the upgrade is worth it. BTW, the SA-1 is a nice complement to this SDA-6, which output voltage in DSD is a little tiny. Using the SA-1 as a small pre-amp could be a nice opportunity for you.
  5. Hi everyone, I wanted to open this thread to invite people who have an interest in the SDA-6 DAC from Singxer to share their experience and their thoughts. I first became interested in this DAC after noticing that it was offering a 10 MHz clock input. Why so ? Because, for a very long time, I have been a big fan of external clocks and an early adopter of the famous Mutec REF-10. I always enjoyed the naturalness these clocks were offering to music reproduction. But, for a long time too, having a DAC with a 10 MHz clock input was reserved to the elite of DACs, like CH-Pre
  6. SwissBear

    HQ Player

    Is it the design of the DAC or the measurement conditions which are not really comparable to yours ? Especially the fact that you are measuring at DSD256 which is significantly improving the jitter ?
  7. SwissBear

    HQ Player

    Hi Jussi, You expressed your interest to see measurements that objectivise the improvements of 10 MHz clocks to the performance of a DAC. Here are the measurements made on the same DAC, a SDA-6 Pro by Singxer, without and with a 10 MHz clock. The improvement is significant, knowing that the last points of SINAD measurements are difficult to reach. Please note that both measurements were made at the same output voltage as this is susceptible to impact SINAD measurements. Also, those measurements were made in PCM mode at 48 kHz sampling. So they do not reflec
  8. SwissBear

    HQ Player

    Thank you for your explanations :-) I'm still puzzled by the fact that this interface, my 10MHz clock and the D90, work perfectly together when the source is Roon, and are disturbed when the source is HQPlayer. As you have pointed out, we can also look at things the other way around and notice that your software is working well at DSD512 when feeding the DAC through its USB input and not though the I2S interface... I very much appreciate your software and my intent is in no way to criticise the way it is implemented. I am just interested to understand the co
  9. SwissBear

    HQ Player

    It's 44.1kx512 Neither do I select this as you have mentioned several times that DAC seldomely support this format. Not sure if this is not the opposite, as the clock and PLL are explicitly disabled in the x-Sabre from the user interface, which I cannot explicitly select on the D90. I also tried the SU-2 without the 10 MHz clock input and this does not change anything. So I'm limited to DSD256, which is not bad at the moment. Thanks for your help.
  10. This DAC seems very well engineered if we judge from measurements: https://www.audio “science” review/forum/index.php?threads/okto-dac8-stereo-dac-review.14705/ Two caveats as far as I'm concerned: this DAC does not have any I2S input, and the delivery time is extremely long. I had one on order since mid-november and I recently cancelled the order as the delivery was not planned for another 6/8 weeks... PS: apologies for the link to ASR which seems not to be welcome in this post... and "" are added by the editor :-(
  11. SwissBear

    HQ Player

    Hi Jussi, I notice that it is not easy to communicate in an efficient way on this subject of high precision clocks. On the "objective" side, you have your knowledge and I have mine. You are referring to the J-test, which is the standard in the industry, whereas I have strong doubts that the distribution of the said J-test, which is "centered" at 12 kHz, could in any way render the difference of performance of clocks, which performance are quite even at this frequency. The improvements of high precision clocks are to be found in the low range of the audible spectrum, and
  12. SwissBear

    HQ Player

    What kind of equipment would I need to make such measurements ? APx555B at 30'000+ US or is there a cheaper strategy to make such measurements ?
  13. SwissBear

    HQ Player

    Thank you for your explanations. It is the interface which does the translation of the 10 MHz clock signal and the clock signal to be used by the DAC. Singxer has a good expertise in this field. The x-Sabre has a mode, called synchronous, which can be selected through the interface, where the DAC would follow the clock signal received together with the music flow; the PLL can be disconnected as well. In the case of the D90, the technical support of Topping mentioned that the DAC would have the same behaviour if fed through the i2s interface. My unders
  14. Hi, I have not listened to it yet. I currently have a Singxer SU-2, with a Mutec REF10 as a master clock, connected to either a Matrix Audio x-Sabre or a Topping D90. What I really appreciate with the SU-2 is the very good galvanic isolation of the USB input, and the capability of the product to apply a high precision clock signal to the i2s flow it is creating. Clocking/Reclocking is a skill of their engineering team and they know how to do it for sure. I am very interested in this new DAC from Singxer. It has very good measurements: https://translate.google.com
  15. SwissBear

    HQ Player

    Hi Jussi, Yes I tried through the USB interface of the DAC, it works flawlessly with DSD512. Having read you extensively on this subject, I appreciate that you do not have a lot of consideration for those interfaces 😉. Having said that, I have to acknowledge that I am very sensitive to the presentation of music which is achieved with high precision clocks (Mutec REF10 in this case). And those I2S interfaces are the only way I found to feed the DAC with a higher precision clock than their own, when they are not equipped with a master clock input. And tho
  16. SwissBear

    HQ Player

    Thanks Ted, Not sure what you mean by ALSA Driver as HQPlayer is running on a Mac which has no such drivers. I am selecting the SU-2 as a device visible from the NAA though. I tried to send some files directly from HQPlayer without Roon and the results are the same: with DSD512, I have the music, attenuated, with noise. This is random though ; I could also have just white noise...
  17. SwissBear

    HQ Player

    Hi Jussi, I have a difficulty with a new configuration (interface + DAC), where I am not able to play DSD512 with HQP. Config is: Mac Mini M1 -> NAA ->(usb)-> Singxer SU-2 ->(i2s)-> Topping D90 When using Roon only and replacing NAA with Roon endpoint, I am able to play DSD512 When using Roon+HQP, and using NAA, I am able to play DSD256. When switching to DSD512 (obviously non EC modulators), I either ear white noise, or music with interference In the same situation, with a different DAC (x-Sabre), I have no problem playing DSD512
  18. SwissBear

    HQ Player

    Hi Jussi, I would simply like to share that I am delighted with the Up Gateway you have recommended as NAA. I received it the other day, copied your NAA image onto a thumb drive, plugged it and everything went absolutely smoothly. The sound produced is perfect. I could even use a rail which was made available on my LPSU to power it. So I am more than happy and grateful for the support you are providing us through this forum.
  19. Hi @Confused, How have you been doing. It's been a while since we last touched base. I have not really compared Singxer SU-2 with Mutec MC-3+ USB a/b. I have acquired a very modest DAC, a Matrix Audio x-Sabre Pro MQA. This DAC has one functionality which is outstanding for me: its clock can be configured to follow the clock included in the I2S (or SPDIF) music flow. It's called Sync mode in the user manual. In this mode, the clock of the DAC is therefore given by the clock of the SU-2, which is in fact synchronised with my Ref-10 (SE-120 as I upgraded this one).
  20. I have two REF-10, one on each of my systems. I recently moved one system to a DAC which can be fed via I2S. I tried to find a way to use this input to provide a clean clock signal to my DAC. I first asked Mutec for a solution, but they could not offer anything apart from the MC-3+ USB, which is limited to PCM 24/192. I tested the Audio GD DI20-HE interface and was not satisfied. On the machine I tested, I found too many distorsions to feel happy and returned it. I just received a Singxer SU-2 and connected it to the REF-10 (SE120). And this was an "whaoo mo
  21. SwissBear

    HQ Player

    Hi Jussi, I have read earlier that you declined to make recommendations as far as PSU are concerned. Can you please share with us how you are powering your UP Gateway as 5V/4A does not seem easy to power with clean PSUs. Thanks. Pierre
  22. 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.
×
×
  • Create New...