[mrcasey]

Perhaps some clarification from those "in the know" because the specs do seem to indicate that the DA8 will play DSD256 and DSD512:
 
Technical  Specifications :
USB Input format support: PCM 16-32bit 44.1Khz 48Khz 88.2Khz 96Khz 176.4Khz 192Khz 352.8Khz 384Khz DSD64,DSD128 - On Windows DSD256,DSD512
Operating system support Mac OSX  Linux with UAC2 compliant kernel.
KS/Wasapi/WDM/ASIO Drivers for MS OS XP to Win8 32-64bit
Inputs: Optical, Coaxial, AES/EBU:16-24Bit,44.1-192KHZ
SNR: -135dB.
Dynamic Range: >130dB.
THD+N: 0.0002%
Frequency Response: 20-30KHz-0.2dB
Crosstalk -135dB
balancedOutput level:4.2V

1. Headphone amplifier output power: 600Ω：70mw    300Ω：150mw  150Ω：280mw  32Ω：1W     
   Power consumption: <30W.
   size: 250*180*60mm.
   weight: 2.5Kg

 

[j3294]

When I play PCM (flac) 24/96 files with foolbar the display showed Input USB 192khz, how do I get foolbar to convert to dsd?
The ASIO Driver Mode is already set to DSD.

 

[Esprit]

But it is stated in the the specifications that it could support

The Amanero board can transfer it.
We need "real" DSD512 to test the Sabre.

 

[Esprit]

1. Power consumption: <30W.

My unit consumes three times as much. Has someone verified this value?

 

[xored]

Change the 'pcm to dsd method' setting to either SDM type A, B,C or D under ASIO proxy settings

 

[Esprit]

I was able to play PCM upsampled to DSD512. It was not good, but it played. If it was not able to play DSD512 it would no play it at all.

On the Mytek I can read, on display, HDSD when I'm playing DSD128.
When you/we play a DSD on the Yulong you/we can only read "DSD" (not DSD64, DSD128, etc..) You/we don't know what type of DSD file the DA8 are trying to play. 

 

[Jd007]

1. Power consumption: <30W.

My unit consumes three times as much. Has someone verified this value?

How did you measure this, with a kill-a-watt wall socket measurer? The da8 has a 30w toroidal transformer (hence the power rating) I think so it's a bit difficult for it to use 3x that much...

edit: its possible i suppose, if the unit is drawing all 30W output and the transformer has 30% efficiency

 

[Jd007]

 

  Hi guys, I am considering to buy this dac for a secondary system
 
Is the Yulong DA8 able to upsample PCM to DSD256 or DSD512 in foobar2000?

The foo_dsd_asio proxy is able to upsample PCM to DSD256 and DSD512 but you will need a reasonably powerful computer. My computer has a Core I7 processor and is able to upsample to these rates without hitting 100% CPU use, however I got bad results with DSD256 and DSD512.
My DA8 has a faulty DSD switch (I am shipping it back for replacement). May be the bad results were caused by this faulty switch.
This switch is a circuit inside the DAC. A noise like a white noise appears wandering from left to right channel when the DAC is very hot. A similar noise appeared when playing DSD512 even when the DAC was cold.

hmm could you tell me a bit more about how you got it to upsample to dsd256 and dsd512? i set the pcm to dsd mode in foo_dsd_asio to the first in the list, but if i choose anything higher than dsd128, it would throw a playback error when i try to play anything. thanks!

 

[Elder]

  hmm could you tell me a bit more about how you got it to upsample to dsd256 and dsd512? i set the pcm to dsd mode in foo_dsd_asio to the first in the list, but if i choose anything higher than dsd128, it would throw a playback error when i try to play anything. thanks!

Set the foo_dsd_asio proxy this way:
 
ASIO Driver: ASIO YULONG Audio 384K DSD DAC
DSD Playback Method: ASIO Native
PCM to DSD Method: SDM Type A (or any other SDM Type)
Fs: DSD256 or DSD512
DSD/PCM Transition: 0 ms (I did not try any other setting)
 
I noticed that with the new "JRiver NEW asio" driver it is working better with DSD256 and DSD512.
With DSD512 I still get a strange noise on the right channel.

 

[Jd007]

 

  hmm could you tell me a bit more about how you got it to upsample to dsd256 and dsd512? i set the pcm to dsd mode in foo_dsd_asio to the first in the list, but if i choose anything higher than dsd128, it would throw a playback error when i try to play anything. thanks!

Set the foo_dsd_asio proxy this way:
 
ASIO Driver: ASIO YULONG Audio 384K DSD DAC
DSD Playback Method: ASIO Native
PCM to DSD Method: SDM Type A (or any other SDM Type)
Fs: DSD256 or DSD512
DSD/PCM Transition: 0 ms (I did not try any other setting)
 
I noticed that with the new "JRiver NEW asio" driver it is working better with DSD256 and DSD512.
With DSD512 I still get a strange noise on the right channel.

i see, my dsd playback method was on DoP instead of ASIO native. dsd256 and dsd512 work now. however i have the same strange noise on the right channel with dsd512. it might be a driver/software issue, or issue in general with da8s (i hope not). would help if other owners could report their findings.
 
ps my da8 is otherwise in perfect working order. USB input, win7 pro 64-bit
 
edit: dsd256 and below are all fine also. only dsd512 has the strange noise, and only in the right channel. im using the built-in headphone amp output

 

[Elder]

  On the Mytek I can read, on display, HDSD when I'm playing DSD128.
When you/we play a DSD on the Yulong you/we can only read "DSD" (not DSD64, DSD128, etc..) You/we don't know what type of DSD file the DA8 are trying to play. 

The sound is different with DSD512 because the artifacts I am getting with my unit. This may be a clue that the DSD sampling frequency is really that of the proxy setting.
With DSD256 I am still getting faint clicks on the right channel. I got no artifacts with DSD64 or DSD128.

 

[Elder]

  i see, my dsd playback method was on DoP instead of ASIO native. dsd256 and dsd512 work now. however i have the same strange noise on the right channel with dsd512. it might be a driver/software issue, or issue in general with da8s (i hope not). would help if other owners could report their findings.
 
ps my da8 is otherwise in perfect working order. USB input, win7 pro 64-bit
 
edit: dsd256 and below are all fine also. only dsd512 has the strange noise, and only in the right channel. im using the built-in headphone amp output

I am getting faint clicks with DSD256.

 

[Jd007]

 
I am getting faint clicks with DSD256.

just tried pcm->dsd256 with a bunch of quiet tracks again, no clicks or noises of any kind. dsd512 though, very significant noise/artifacts
 
also am i crazy or does pcm converted to dsd sounds better or at least different from bit-perfect pcm?

 

[mrcasey]

  just tried pcm->dsd256 with a bunch of quiet tracks again, no clicks or noises of any kind. dsd512 though, very significant noise/artifacts
 
also am i crazy or does pcm converted to dsd sounds better or at least different from bit-perfect pcm?

I am trying that out now.  Seems to sound pretty good to me.

 

[Jd007]

 
I am trying that out now.  Seems to sound pretty good to me.

thank you for trying it out! are you using the same software to do the conversion, ie foobar2k? if not then it could be a foobar conversion issue, as i have not tried jriver. also you are converting to dsd512, and there is no audible problems?