[hgpsemaj]

   
Hahahaha, i know what you mean 

 
Maybe they've got tested with ocxo? Maybe you ask them for type?

 
No, not me. And, there is three reasons I would not bother:
 
(i)   They are not an A to A replacement,
(ii)   From observation, the performance of NDK is so close to OCXO; And, from your replacement review, the NDK is so outstanding.
(iii)  I am struggling with an OCXO now, and I shall submit this report, hopefully, sometimes next week.  

 

[bowtung]

 
Wow... congratulations.. if you get the chance, please report on the SQ differences vs. the M7 USB32... thanks...

Sorry for the late reply, have been very busy, and not listening to music that much.
 
The immediate difference to me is that the mx-u8 has better dynamics, punch, authority and maybe resolution (not sure if I am hearing resolution).
The usb32 with the latest firmware sounds soft compared to the USB interface.
 
This does not mean that I prefer the digital interface, in fact, although I think the interface is better (at least technically), I might actually prefer the softer sounds (preference only).
I do need much more time to evaluate the differences. However, we are talking about interface, not the DAC itself, the differences are very minor compared to like a dac change.
 
I also need to get a better i2s cable, I am just using a 15cm internet cable right now. So take my impression with a pinch of salt

 

[prot]

Mr. Liu claimed they would not install 'Digital Display' on MX-U8.
'Digital Display' could only be installed on a DAC which is controlled by software, Mr. Liu considers this is a redundant move.

Guess he is right but it was worth a try

 

[Alexsander]

DSD+Gustard U12+Gustard DAC-X12:

DSD64 in DoP playing without problem - all outputs is working;
DSD128 in DoP playing but ONLY with very good interconnect i2S HDMI cable, other U12 output is not working!
Native DSD64 and Native DSD128 - playing ONLY with I2S HDMI cable, AES/EBU and Coaxial -white noise!
Native DSD256 - playing with I2S HDMI, but ONLY at installation in the mode driver "USB Extra Safe" (buffer 8192), at other modes-stream is damage.
When playing DSD256, on an U12 converter screen instead of the DSD256 mode is shown----but on DAC-X12 via the U12 converter it is playing without problems and on a screen of DAC-X12 DSD256 is shown!
DSD512-is not working! "out_main.dll"

 

[MINORISUKE]

  DSD+Gustard U12+Gustard DAC-X12:

DSD64 in DoP playing without problem - all outputs is working;
DSD128 in DoP playing but ONLY with very good interconnect i2S HDMI cable, other U12 output is not working!
Native DSD64 and Native DSD128 - playing ONLY with I2S HDMI cable, AES/EBU and Coaxial -white noise!
Native DSD256 - playing with I2S HDMI, but ONLY at installation in the mode driver "USB Extra Safe" (buffer 8192), at other modes-stream is damage.
When playing DSD256, on an U12 converter screen instead of the DSD256 mode is shown----but on DAC-X12 via the U12 converter it is playing without problems and on a screen of DAC-X12 DSD256 is shown!
DSD512-is not working! "out_main.dll"

As I posted previously, the stand-alone DAC-X12 has an issue of left/right channel swap in DSD playback, which seems not to have been fixed yet.  I appreciate if you could check channel swap happens in your combination (and absolute polarity as well, if possible), as many DSD DACs are suffering from this.
Unless you have an appropriate "check" source file, you can download a free one for PCM and play it with real-time DSD conversion (foobar2000 and JRMC have this feature).

 

[hgpsemaj]

  DSD+Gustard U12+Gustard DAC-X12:

DSD64 in DoP playing without problem - all outputs is working;
DSD128 in DoP playing but ONLY with very good interconnect i2S HDMI cable, other U12 output is not working!
Native DSD64 and Native DSD128 - playing ONLY with I2S HDMI cable, AES/EBU and Coaxial -white noise!
Native DSD256 - playing with I2S HDMI, but ONLY at installation in the mode driver "USB Extra Safe" (buffer 8192), at other modes-stream is damage.
When playing DSD256, on an U12 converter screen instead of the DSD256 mode is shown----but on DAC-X12 via the U12 converter it is playing without problems and on a screen of DAC-X12 DSD256 is shown!
DSD512-is not working! "out_main.dll"

 
What is your 'audio player'?  foobar2000? or ?

 

[motberg]

  Sorry for the late reply, have been very busy, and not listening to music that much.
 
The immediate difference to me is that the mx-u8 has better dynamics, punch, authority and maybe resolution (not sure if I am hearing resolution).
The usb32 with the latest firmware sounds soft compared to the USB interface.
 
This does not mean that I prefer the digital interface, in fact, although I think the interface is better (at least technically), I might actually prefer the softer sounds (preference only).
I do need much more time to evaluate the differences. However, we are talking about interface, not the DAC itself, the differences are very minor compared to like a dac change.
 
I also need to get a better i2s cable, I am just using a 15cm internet cable right now. So take my impression with a pinch of salt

Thanks for the update - in the next few weeks I will be comparing the DI-2014 vs. the MX-U8 with a M7.. everything is new so will need a few weeks to settle in. I need think about the RJ45 cable also..
Maybe the MX-U8 with soften up a bit over time, I remember the U12 was pretty harsh the first couple days when I had it paired with a NOS1704...

 

[Alexsander]

MX-U8 has only one advantage: better PSU (talema + LT1963 + 4x2200uF) in Gustard U12 (LM317D2T + AMS1117 + 2x2200uF)
In MX-U8 oscillators: 22.579200MHz and 24.57600MHz.... in Gustard oscillators: 49.152000MHz and 45.158400MHz interestingly why?
Better Digital Transformer (Murata DA-101C) in MX-U8, but install this in Gustard it is not problem (remove Pulse 65612nl).
Schemes looks less technologically and simply in Melidious MX-U8 (IMHO)....
Too far install oscillator 24.000000MHz from the chip XMOS...
all this doesn't inspire trust...
it is better to wait more advanced device! 
with galvanic isolators as in tanlyAudio!

 

[Alexsander]

to hgpsemaj
 
JRiver

 

[AKAI]

  The I2S from U12 works with W4S.
Confirmed. (I use U12 and W4S)

Hi Rurika:
 
Did the W4S lock the signal from the U12 right away? Is there anything special that you need to set up?
I just received my Audio GD DI-2014 and so far it is not working on my W4S DAC2 and I don't know what is wrong?
 
thanks,
 
MP

 

[hgpsemaj]

Re: Linear Power Supply
 
XMOS is designed with a high degree of integration, so I am considering  to power the 'main circuit board' and oscillators independently. I may let the given transformer to support the 'main circuit board', and use a 'Linear Power Supply' to back up those oscillators. I found the following 'Linear P.S.' are quite attractive:
 
 
(A) RMB190.          http://item.taobao.com/item.htm?spm=a230r.1.14.47.kqMFwY&id=38740262716&ns=1&abbucket=17#detail

 
 
(B) RMB220 - RMB280  
http://item.taobao.com/item.htm?spm=5706.1529727.a31f1.2.6aLAkp&id=39418148280&scm=1007.11502.5699.0&pvid=8036e3ab-d8cd-4d83-bebf-d125af2e6750

 

[m0reilly]

as alexander pointed out, and i mentioned earlier (i bet i got the info originally from alexander, and tried it ), the u12/x12 combo does 256. i do however prefer the i2s connection over the aes for redbook.

 

[hgpsemaj]

  as alexander pointed out, and i mentioned earlier (i bet i got the info originally from alexander, and tried it ), the u12/x12 combo does 256. i do however prefer the i2s connection over the aes for redbook.

 
Hello,
 
What is your 'audio player'?  foobar2000? JRiver? or
 
 
Regards,

 

[prot]

Re: Linear Power Supply

XMOS is designed with a high degree of integration, so I am considering  to power the 'main circuit board' and oscillators independently. I may let the given transformer to support the 'main circuit board', and use a 'Linear Power Supply' to back up those oscillators. I found the following 'Linear P.S.' are quite attractive:
...

Would you care to explain *why* are those particular LPSes so 'attractive' !?

 

[hgpsemaj]

Would you care to explain *why* are those particular LPSes so 'attractive' !?

 
The Price.