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Old 22nd March 2011, 03:02 PM   #191
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Quote:
Originally Posted by Bunpei View Post
I'd like to explain one more issue that those who connect the exaU2I devices to ES9018-based DAC modules may experience.
I am aware of that your advice may be important to Buffalo DAC users but not to ES9018 based DACīs in general.
The only problem is that for the Buffalo users the solution are a new firmware..

As I am now "toying" with the exaU2I I have discovered that the exaU2I have interesting features that may increase performance on DACīs that uses the ES9018 in full Sabre32 mode.
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Old 22nd March 2011, 03:06 PM   #192
exa065 is offline exa065  Canada
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Quote:
Originally Posted by Dmitry Nevozhay View Post
exa065,
could you add the i2c header and driver to "tunnel" the i2c bus from computer to exaU2I via USB??? It will be usefull to control ES9018's volume-control registers.
Hi Dmitry,
I will open again the discussion about enhancements for version 2 when the waiting list backlog is cleared and all users are taken care of. If you want, you can contact me via PM and explain how you want to see i2c volume control implemented.
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Old 22nd March 2011, 03:19 PM   #193
greggp is offline greggp  United States
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Quote:
Originally Posted by greggp View Post
There are plug-ins for both foobar2000 and J.River Media Center that will let you do this.
With foobar2000, I think you can use a plug-in called the 'Channel Mixer' and with JRMC, you can use a combination of their 'Output Format' and 'Room Correction' tools. However, I have a 5.1 speaker setup and haven't tried it with 2.1. If they don't support a subwoofer unless you have a surround setup, try contacting the developer and explain that you'd like to use it for a 2.1 system and they might be able to make a minor adjustment to their plug-ins.
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Old 22nd March 2011, 03:20 PM   #194
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by RayCtech View Post
I am aware of that your advice may be important to Buffalo DAC users but not to ES9018 based DACīs in general.
The only problem is that for the Buffalo users the solution are a new firmware..
The problem was reproduced on the following DACs.

A. ESS ES9018 2ch Evaluation Board (40MHz, 100MHz)
B. Buffalo32s
C. Buffalo II DAC (80MHz, 100MHz)
D. Fidelix CAPRICE (96MHz)

You can have one another work-around. Not using "Over Sampling Mode".
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Old 22nd March 2011, 04:06 PM   #195
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Quote:
Originally Posted by Bunpei View Post
You can have one another work-around. Not using "Over Sampling Mode".
If you read the datasheet - ESS recommends 352.8k -> 1536k samplerates to be used with OSF disabled.
If you manages to make a work-around like using a higher clock frequency and thus be able to use the OSF it is up to the designer to solve any issues.

Likewise ESS recommends the "Best Default" setting for the DPLL.
If a product use other DPLL settings it is up to the designer to solve any issues.

So my conclusion are simply:
The products you mentioned are simply not designed for 352.8k -> 1536k use.
Ask the designers of those products to implement support for higher than 192k samplerates...
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Old 22nd March 2011, 05:16 PM   #196
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by RayCtech View Post
So my conclusion are simply:
The products you mentioned are simply not designed for 352.8k -> 1536k use.
Ask the designers of those products to implement support for higher than 192k samplerates...
I'm afraid that your are confusing the 352.8 kHz noise issue with the unlock on the DPLL Bandwidth Parameter of "the lowest" issue.
As for the DPLL Bandwidth Parameter issue, it happens even on 44.1 - 192 kHz sampling rates.
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Old 22nd March 2011, 06:52 PM   #197
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Quote:
Originally Posted by Bunpei View Post
I'm afraid that your are confusing the 352.8 kHz noise issue with the unlock on the DPLL Bandwidth Parameter of "the lowest" issue.
As for the DPLL Bandwidth Parameter issue, it happens even on 44.1 - 192 kHz sampling rates.
I did not think I was ,
but I might start believing it now.....
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Old 23rd March 2011, 12:56 PM   #198
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Default exaU2I basic evaluation

The exaU2I device have been up and running for 24 hours now and I have started the basic evaluations...

The basic evaluation setup are as follows:
Player PC:
Dualboot - 64bit - OSX 10.6.6 and Windows 7 Enterprise.
SSD system disk, 2T local storage, Gigabit ethernet.
With the ASIO driver evaluations I use Foobar2000 and Windows 7.

NAS:
Mac Pro (Hackintosh) running OSX 10.6.6 - 64bit.
SSD system disk, 8T RAID, Gigabit ethernet.

The first evaluated setup are the Japanese Caprice DAC / preamp from FIDELIX Home

Other setupīs and configurations will be evaluated from a technical aspect as I have the time for it....

The exaU2I are connected with a standard USB cable to the PC, and the output side of the GMR isolators and the LVDS transmitters (using HDMI connectors and cable) are powered by a 3.3 volt LIFEPO4 (12Ah) battery.

The HDMI cable connects to the Japanese Caprice DAC / preamp from Fidelix with a integrated HDMI / LVDS receiver with galvanic isolation.
The Caprice DAC uses a ES9018 chip and a 96MHz clock from Fidelix.

This setup might be the second most advanced / sophisticated setup with the exaU2I - disconnecting the USB power and run the exaU2I from two additional LIFEPO4 batteries will possibly be the ultimate solution and will be implemented when I start the listening tests..

The current setup works very well and did so at the very first attempt
44.1k/16bit flac to DXD 352.8k/24bit plays as far as I can evaluate perfectly.
I will test this configuration with 352.8k/32bit and evaluate the various configuration setups of the Caprice DAC before I continues on the next candidates (DAC)..

I will congratulate exa065 with this excellent and very useful product.

EDIT: The used (in picture with the exaU2I) I2S -> LVDS -> HDMI transmitter are also a product from Fidelix.
Attached Images
File Type: jpg exaU2I-1.jpg (256.9 KB, 524 views)
File Type: jpg exaU2I-2.jpg (193.5 KB, 499 views)

Last edited by RayCtech; 23rd March 2011 at 01:06 PM.
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Old 23rd March 2011, 02:34 PM   #199
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The first evaluated setup was the Japanese Caprice DAC / preamp and the use of I2S -> LVDS -> HDMI cable -> LVDS -> I2S and battery power of the GMR isolators and LVDS hardware was done to verify that there was no limitations of the possibilities or performance with the exaU2I device.

Buffalo DAC, ACKO DAC, my own DAC and other DACīs with and without the LVDS / HDMI interface should work just as easy with the exaU2I, and I will post the results as soon as some of the configurations have been tested.

I do not have access to a ACKO DAC so that configuration will not be tested...
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Old 25th March 2011, 01:22 PM   #200
exa065 is offline exa065  Canada
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Good news! Several of the users who have received and connected the device have contacted us to say that they are happy with it. I am very pleased to announce that we haven't had any support issues and all devices function without any glitches. We will see more reviews in the near future.

Unfortunately, some users have expressed concerns about sharing their experience on this thread. They say that they were approached, misled and misinformed by third parties that are interested to interfere with the success of exaU2I. In response to their concerns we will create a dedicated forum for supporting the device.
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