Anybody using the new ESS Vout DAC (ES9022)? - Page 10 - diyAudio
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Old 3rd April 2011, 03:31 PM   #91
SunRa is offline SunRa  Romania
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Thanks Patrick! By the way I like your PCB design
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Old 3rd April 2011, 03:45 PM   #92
EUVL is offline EUVL  Europe
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Many other as well.
And the 9022 does sound much much better than it deserves.


Patrick
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Old 3rd April 2011, 04:18 PM   #93
SunRa is offline SunRa  Romania
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This is good to know. I am now trying out an AK4396 and then I will probably go for an ESS part. The source I will be using is capable of 32bits/384Khz and I would like to take advantage of that..
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Old 3rd April 2011, 10:15 PM   #94
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Quote:
Originally Posted by EUVL View Post
Many other as well.
And the 9022 does sound much much better than it deserves.


Patrick
Yes it does sound better than it should. Give it a decent power supply and it will out perform many others. The fact that it doesn't need an output stage is a big plus, also means casing it up is a lot simpler. But the main thing is how it sounds - and that's very good. My points of reference : buffalo with all shunt supplies, audiosector nos, pass d1.

I'm very much looking forward to trying EUVL's implementation in the near future

Fran
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Old 20th April 2011, 10:58 PM   #95
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Yesterday I received a nice thing from the mainland of Europe..... EUVLs 8804-9022 DAC.

I had asked for the regs to be left off as I had planned to run it from 4 separate batteries. The wiring was easily completed and the DAC worked right away out of the can.

I listened for a little while last night and again tonight - this DAC sounds really really good.

I need some more time for better comparisons, but from the get go, it sounds great. I will be comparing it against a buffalo 1 with all shunt supplies and counterpoint output stages, an audiosector NOS premium dac, another 9022 run from a battery and fed by a twisted pear 8804 board, and also a Pass D1 clone from spencer. Sources will be 2 different shigaclones and 2 different squeezeboxes.

EUVL can describe the exact configuration in better terms than I can...... photos etc to follow in the next couple of days.


Fran
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Old 20th April 2011, 11:04 PM   #96
EUVL is offline EUVL  Europe
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Glad you are happy with the results.
Looking forward to further comparisons.




Patrick
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Old 21st April 2011, 09:28 PM   #97
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I did some comparisons tonight between the EUVL 8804/9022 and another version, with a twisted pear 8804 receiver and 9022 on a ebay expansion board. Both powered off LiFePO batteries, but with 4 on the EUVL one and 2 on the other.

Short story: better highs and lows with the EUVL version. Bass is definitely tighter, and the treble clearer. I also think I can hear more small details (resolution), especially in live recordings where there is a fair bit of audience noise. Now it isn't a huge difference, but definitely noticeable and easy to tell apart.

Rest of test system:

Shigaclone
aikido 6SN7 pre
modified dynaco ST70 with KT66s
Stacked quads

More and different comparisons to come....

Fran

Last edited by woodturner-fran; 21st April 2011 at 09:36 PM.
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Old 21st April 2011, 09:35 PM   #98
EUVL is offline EUVL  Europe
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Slight correction if I may -- my SPDIF receiver is also a WM8804 and not 8805.
So the difference you can hear is based on both set-up's using identical chip sets.

The difference is relatively easy to explain.
It has to do with power supply decoupling, especially for the ES9022, and HF filtering at the output stage.
I actually asked ESS Tech about in-depth details of their analog output stage, as well the the negative supply generation circuit, before deciding on how I implement the module (which is quite different from datasheet standard circuit).



Patrick
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Old 21st April 2011, 09:41 PM   #99
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Sorry, the 8805 was a mistake - corrected now.

Interesting reason........ it's good to have one.


The other thing I forgot to mention above was that the dac also presents vocals differently - they move forward in the soundstage. I know it seems strange but I tried several different cds and found the same thing.
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Old 21st April 2011, 10:04 PM   #100
EUVL is offline EUVL  Europe
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Regulator ICs & Caps will be on their way Saturday.


Enjoy your audition,
Patrick
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