exaU2I - Multi-Channel Asynchronous USB to I2S Interface

[tsiros]

there is no facepalm big enough.

 

[Forane12]

The mastering lab that the experiment took place in was equipped with Benchmark DAC1s, supposedly jitter immune, which IMHO is far from the truth.

 

[Bunpei]

2L is providing some Surround 5.1 DXD sources at their web site.
ExaU2I has "Multi-channel" capability.
Has anyone achieved the successful play of the 2L sources using ExaU2I?

 

[vitalica]

You please help me with some advice.
Is an advantage to use SOtM tX -USB with exaU21?The Well-Tempered Computer
No matter the price SOtM tX-USB.

Thank you very much

 

[analog_sa]

Is an advantage to use SOtM tX -USB with exaU21?

No first hand experience with SOtM, but judging by the improvement from clean PS or low latency PC, yes, there should be a small improvement.

 

[supra]

No first hand experience with SOtM, but judging by the improvement from clean PS or low latency PC, yes, there should be a small improvement.

I've got the sotm in my highend computer, with exaU2I/Ackodac.
The difference is not great, but it is smoother, powerful sound, bass is tighter,deeper to ears.

 

[bibo01]

I am also inpatient to play with Linux driver development. There are just so many hours in a day...

Sorry to insist but I am not sure I fully understand what you imply.
Do you mean that Linux compatibility is very far down the road?
Could you please give us a possible timescale?

 

[vitalica]

No first hand experience with SOtM, but judging by the improvement from clean PS or low latency PC, yes, there should be a small improvement.

Thank you very much

 

[vitalica]

I've got the sotm in my highend computer, with exaU2I/Ackodac.
The difference is not great, but it is smoother, powerful sound, bass is tighter,deeper to ears.

Thank you very much for your experience.
And now I work with cMP2-ExaU21/Buffalo3 dual mono .
I decided to use myself SOTM

 

[Coris]

...... Since consumer operating systems are not real-time systems, eventually the result of all this is different errors in the timing of the output sound stream. With "simple" words, big errors can cause dropouts, mid-size errors will cause deviations of the sampling rate, and small errors will cause jitter.
......................................................................................................
Unfortunately the approach to make the computer to run quiet and smooth doesn't work very well. It is focused on reducing the symptoms, but the root cause remains. The consumer operating systems are not capable of delivering precise timing for audio. The solution is to take the necessary measures outside the computer to re-clock the audio stream and to isolate the computer noise. There are different techniques for doing that. The best that I know of are:

• Using an asynchronous interface to restore accurate timing (and eliminate computer jitter)
• Using galvanic isolation to eliminate computer noise

.....................................................................................................

What about improve timer resolution in Windows based systems? I know that specially XP based systems (which are preferred of many peoples as media machine) this resolution is bad. In Win7 this is better but not enough...
Using this small application (Timer resolution) I could improve it on my system to 0.5ms. In my opinion this have a positive impact for streaming processes which are basics in PCs used for audio purposes...

 

[DUC985]

Just moved from Windows to a Macbook. Using the Windows setup for quite some time and never had any issue.
Now i want to use Audirvana with OSX 10.8.1. The Exa Driver installed without any issue, but initially i got no sound output. After figuring around i noticed that when using the 8-Channel Driver i have Sound output. Using 2-CH no output

Is this a bug of the driver or a 10.8.1 OS issue ?

Also i would like to know if the OSX driver can output native DSD to the DAC ?

thx

 

[exa065]

Click on the exaSound dashboard icon on the menu (it is located somewhere close to the volume control icon) and select Output Device --> exaSound 2ch.

Around the end of September we will be releasing the next generation drivers, and one of the new features is DSD over PCM for Mac. It will be compatible with Audirvana Plus.

Regards,

George

 

[DUC985]

good to know that, really looking forward to the new driver. I found some time today to do further checks. Its devinitly related to the driver and the Audirvana combination. Switching the dashboard has no effect at all.
I tested ITunes which i hate with Puremusic and this runs fine with the two channel driver. If you need a tester let me know.

 

[Bunpei]

one of the new features is DSD over PCM for Mac. It will be compatible with Audirvana Plus.

Will it support DSD128, DSD256 and DSD512 as the current LoTech Player does?

 

[gentlevoice]

Will it support DSD128, DSD256 and DSD512 as the current LoTech Player does?

Just briefly bumping the thread: Bunpei, can you post a link to the LoTech Player? Didn't find it when googling the name ...

Greetings,

Jesper

 

[exa065]

Here is the link: DSD Playback with exaU2I

 

[gentlevoice]

Thanks George for a very quick reply

Jesper

 

[clsidxxl]

Hello,

I have a dac Audio Gd Ref 7.1 ºÍ§Ó­µ响 ,is it possible to use the Exadevice as digital interface between my PC and the ref 7,thanks.

 

[exa065]

exaSound e20 DAC

Please allow me to introduce a new device from exaSound - the e20 DAC.
Here is the new thread.

 

[labjr]

I sent an email via the exasound website asking about DSD256 support.

Bunpei, with DSD256 the quantization noise doesn't overlap with the audio allowing simple filtering. Thus I don't see the need to go beyond DSD256.