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Cornell77

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  1. I have been able to test DSD512 playback using Windows kernel streaming. It works as a proof of concept - but still has the same dropout problems as DSD256 kernel streaming. I am testing a Singxer SU-2 DDC which allows for DSD1024 input over USB. This makes DSD512 kernel streaming possible.
  2. 1.1 still stopped before the end of the track in testing last night. There were also multiple dropouts. I had experienced these problems in 3.5 during the prior month. It may be that using kernel streaming exacerbates the problem. With regard to kernel streaming, test the output by selecting device maximum frequency in upsampling as well. I was able to use kernel streaming at 32bit/768kHz PCM. If this also shows a problem, then AS is not recognizing the sampling capability of your DAC.
  3. My favorite = Kernel streaming + DSD256 Upsamplling + R8Brain + Min Phase + B8 Modulator
  4. I just played Bill Evans; Live at Shelley's Manne-Hole from High Definition Tape Transfers at DSD256 using kernel streaming. It worked fine. But - the AS software was just upgraded to rev 1.1. I had not tried this test of an actual DSD file on the 1.0 release.
  5. DSD 256 kernel streaming success: I was able to upsample to DSD256 using kernel streaming in Windows 10. The receiving device is a Gustard U16 that is capable of DSD512 input. Using ASIO, I am able to upsample to DSD512. There is a DOP selection available in the DAC input settings that appears after selecting kernel streaming. (This DOP setting is not available in my system when ASIO is selected.) Using kernel streaming: With DSD512 upsampling selected and DOP 1.1 chosen in the DAC input settings, the music is output at 16bit/44kHz. However, if I drop back to DSD256
  6. I have experienced the same dropouts when upsampling to DSD256 with a 2017 13" MacBook Pro and Audirvana 3.5. The MacBook CPU runs at about 63% to perform the quad DSD upsampling, so I thought it might ba a CPU limitation. Your post makes me think that it is not a CPU limitation, as the 2018 Mac Mini is faster than my dual core 2107 MacBook Pro. I did find this clarification from IFI regarding the operation of the DC-RF position of their nano iGalvanic3: My DAC's USB input is self-powered, so I also defeated the power connection from the MacBook Pro, but the dropouts r
  7. I used a good quality USB C to USB B cable to again test DSD256 upsampling. This cable eliminated a USB C to USB A adapter that was previously used with the more standard USB A to USB B cable. No luck. I still experience dropouts using my 2017 MacBook Pro. Damien, did your test on Mojave include Direct Mode? If so, can you re-run with Direct mode off? So far, I am surprised that the 2017 MacBook Pro tops out at the same DSD128 upsampling that was supported by my 2009 MacBook Pro.
  8. Nice! Listen for a bit as my "stutters" sometimes occur only every minute or two. But at this point, it is best that I eliminate the USB C to USB A adapter with a dedicated USB C to USB B cable. I hope that is the culprit.
  9. Thanks. Jud confirms that DSD256 upsampling works on El Capitan (I believe) on his 2009 MacBook Pro. It would be good to know if DSD256 upsampling also works with Mojave.
  10. Hi Damien, Thank you for your reply. In moving from my 2009 MacBook Pro to the 2017 MacBook Pro, the laptops also move from USB A to USB C ports. I had been using high quality USB A to USB B cables from Audioquest, Oyaide, and Pangea. Thus, for the 2017 MacBook Pro, I connect these cables with an Aukey USB C to USB A adapter. Perhaps the adapter is a problem for USB data transmission. I will order a good quality USB C to USB B cable for testing. In the meantime, are you able to do a quick test using a Mojave based MAC to confirm that DSD256 upsampling with integer mode works
  11. With regard to upsampling 44.1k to DSD256 on my 2107 MacBook Pro, I discovered that playback is smooth (without dropouts or pops) if I turn off integer mode. With integer mode turned on, I experience dropouts and occasional pops. The CPU load looks to be the same whether integer mode is on or off. As expected however, the sound is better with integer mode on. Can this be fixed?
  12. Hi Jud, Thank you. When you say that you have to wait a while for the track to load into memory, is there a separate setting in this regard? I set my memory buffer between 2GB and 5.12GB and it doesn't make a difference with respect to the dropouts. The track starts playing quickly. I can see the buffer move ahead of playback as well on the lower progress bar.
  13. Is anyone upsampling 44.1kHz (Tidal) to DSD256 on Audirvana 3.5 without issue? I had been running a 2009 MacBook Pro and upsampling successfully to DSD128. I am now using a 2017 MacBook Pro I5 w/ 2.4 KabyLake processor and hoped to be able to upsample to DSD256. But I have intermittent dropouts and pops. The dropouts are roughly every 30 seconds or so. I haven't found any settings of Izotope or Sox that solve the problem. My latest Izotope settings are: Steepness 150dB Filter Length 1,000,000 Cutoff freq 1x Nyquist Antialiasing 200 Pre-
  14. Great! There are multiple threads in different forums on this DAC. I believe I remember someone posting that it did work with the IPhone. The main thing is that I hope Pro-ject can send a DAC to Davy at UAPP for testing. I would be most happy if the Android phone could work without plugging in the micro-USB power, but even requiring the external USB power would be fine.
  15. Thanks for putting UAPP "direct" support for the DAC on the support list. Yes, I had read your prior posts showing that a USB Regen was required to get your Android phone to work and that the sound was weak. I believe that you also mentioned that the Prebox S2 did work with the Iphone. Certainly, proper operation can't be guaranteed, but UAPP is willing to test it and put it on their supported DAC list. I would hope that Pro-ject would support giving it a try. Thanks again for offering to help!
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