Anybody using the new ESS Vout DAC (ES9022)? - Page 23 - diyAudio
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Old 14th January 2012, 05:13 AM   #221
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I got Euvl´s ES9022 board and had some listen. The sound is very wide band with very good extension in the bass and good extension in the treble. Tonal balance is neutral, this is no smoothed over candy sound and no fake "magic". Image focus is outstanding, so is depth perspective so micro detailing must be very good. What really surprised me is the bass performance especially considering that i used simple 9V blocks to supply it and there are no huge capacitors or regulators on this tiny boards. It goes as deep as i heard it, has slam and power and is precisely structured and rhythmic. After i had digested the first shock i was able to find small remaining problems, namely a little more artifice and less liquidity and naturalness then my 30.000,-€ Forsell rig. This are minor problems and may be solved by buffering the output. The Forsell also has one of my time domain buffers at the output. The Forsell alone without my buffer has a rather soft treble and compared to that the Euvl board is a huge bargain. I call that progress.
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Old 14th January 2012, 07:36 AM   #222
EUVL is offline EUVL  Europe
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Thank you Joachim for the feedback.

We also agree that some form of LP filter like a discrete JFET Sallen Key filter at the output may improve the smoothness slightly.
But these are all very personal.

Glad you like our work.
FYI, Joachim had a ES9022-48MHz module with frequency divider to feed 12MHz to the WM8804 module with the same XO.
The two modules had 4x LT1761 regulators on board, close to the ICs. Identical to the one on the right in Post #219.


Patrick
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Last edited by EUVL; 14th January 2012 at 07:48 AM.
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Old 14th January 2012, 08:34 AM   #223
CFT is offline CFT  United States
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would using a pair of say UTC-20 transformers here help?
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Old 14th January 2012, 09:29 AM   #224
EUVL is offline EUVL  Europe
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To help what ? Soften the sound ?

I am not a transformer guy.
Maybe Joachim knows more.


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Old 14th January 2012, 09:53 AM   #225
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Quote:
Originally Posted by EUVL View Post
A new batch of modules ready to go to their new owners.

On the left a standard asynchronous ES9022-50MHz with I2S input.
On the right a WM8804 SPDIF Receiver module, followed by a ES9022-48MHz, with the 1:4 frequency divider which feeds 12MHz to the WM8804 from the same XO as the DAC.

We got tired of etching PCBs, so we have some made for the ES9022.
The next batch of WM8804 will also get factory made PCBs.


Patrick
Are these available?
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Old 14th January 2012, 09:58 AM   #226
EUVL is offline EUVL  Europe
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When you know what you want, and I have time, and you are prepared to wait for a few months, yes.



I takes 4 hours to make and test one set like what Joachim has.
And I don't have much free time.

People have asked for boards. The effort to support those is too much.
And I doubt many can solder 0402 caps at the legs of a TSSOP package (of the WM8804).

So no boards. Sorry.


Patrick
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Old 14th January 2012, 10:08 AM   #227
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Quote:
Originally Posted by EUVL View Post
When you know what you want, and I have time, and you are prepared to wait for a few months, yes.



I takes 4 hours to make and test one set like what Joachim has.
And I don't have much free time.

People have asked for boards. The effort to support those is too much.
And I doubt many can solder 0402 caps at the legs of a TSSOP package (of the WM8804).

So no boards. Sorry.


Patrick
How do you solder those tiny little things without burning them up. How much would performance suffer with standard parts?
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Old 14th January 2012, 10:34 AM   #228
EUVL is offline EUVL  Europe
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Sheer hand skill.
That is why it takes so long.




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Old 14th January 2012, 10:48 AM   #229
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Quote:
Originally Posted by EUVL View Post
Sheer hand skill.
That is why it takes so long.




Patrick
And a tiny little elf soldering iron What about performance comparison vs standard sized comppnents? I have 5 of the chips and need a multi bit complimentary to my NOS dac.
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Old 14th January 2012, 11:36 AM   #230
EUVL is offline EUVL  Europe
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If you have 5 chips why not just try.

Everyone has a slightly different conclusion.
And these opinions are already posted in the forum.


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