Anybody using the new ESS Vout DAC (ES9022)? - Page 58

curryman · 8th March 2013, 04:49 PM

It's a Sennheiser HD480 classic (100Ohm). On Monday i'll test with Sennheiser HD650 and compare with electrostatic phones from Sennheiser with HEAD acoustics PEQ V with PVA IV.3 (it's a bit unfair

).

Best regards, Daniel

EUVL · 8th March 2013, 05:05 PM

You can also use the ES9022 to drive a 100~200 ohm phone at normal or low listening level.
But it won't drive a 32ohm Grado or an AK701.
It will still make sound, but I would not call it music.

Else why do I need to bother with the DAO SE .....

Patrick

enjoybiking · 8th March 2013, 05:05 PM

I'll ask the stupid question, will the output of this FET stage {into headphones} increase with V? More slam? Daniel may still be running 9Vx2... yet.

I find that on "hot" recordings I have to turn down the digital volume on ES9023 or it clips [even at 3.6V with 100K to ground on pin#6]. After that it's a wonderful DAC chip for the price! I am anxious to try the filter buffer, I have one filter 90% done in a AC wiring box [just the filter] to experiment with in front of other gear I own, and after some DACS, obviously.

Quote:

Originally Posted by curryman

It's a Sennheiser HD480 classic (100Ohm). On Monday i'll test with Sennheiser HD650 and compare with electrostatic phones from Sennheiser with HEAD acoustics PEQ V with PVA IV.3 (it's a bit unfair

).

Best regards, Daniel

EUVL · 8th March 2013, 05:08 PM

No. Follower has no gain.

Patrick

diyskat · 13th March 2013, 03:02 PM

I wonder if anyone with access to proper measurement equipment could run and publish some performance measurements for Daniel's board (THD+N, IMD, DNR etc.) ?

curryman · 13th March 2013, 08:52 PM

Quote:

Originally Posted by diyskat

I wonder if anyone with access to proper measurement equipment could run and publish some performance measurements for Daniel's board (THD+N, IMD, DNR etc.) ?

That would indeed be quite interesting

However the first betatester just received their proto-boards and it may take some time until they sourced the components and soldered the boards.

I already did some first measurements with my build but did not save the graphs (Arta Demo -> only screenshots). With my RME DIGI 96/8 PAD I measured a THD+N around 0.0058 (-103dB) with 96kHz I2S Input (not U.Fl but pinheader) from miniSTREAMER (TE7022) *. Hard to interpret though since there are too many variables. I don't have a low THD generator at hand to test the ADC of the RME card. In loopback (incl. soundcards DAC) THD is (only) slightly better.

Best regards, Daniel

*There might also be some potential to improve the miniSTREAMER or asynchronous USB solutions might also be better

diyskat · 14th March 2013, 12:09 AM

Thanks Daniel. It does look promising. I would still love to see someone run a similar testing methodology like nwavguy did for the ODAC. I know it is a long shot to ask as it would require time and access to a professional grade equipment. If your BOM is finalized and replicable, the test results could provide a good indication of what we can practically achieve with the board.

BTW, are you planning to give this specific board a code name?

I think I'm going to get one piece to try out. Just worried about replicating that ES9023 soldering feat in your photo.

orangeart · 2nd April 2013, 12:31 PM

Hi Curryman,

I arrived here from your thread over in the mini DSP forum.

Where are you at with this board? sound like just what I'm after to use with the new minisharc board and then out to my hypex modules.

Stefan

enjoybiking · 2nd April 2013, 03:03 PM

Orangeart,

the build-thread you seek is at:

Build thread for ES9023 + JG Buffer boards (betatest)

8th March 2013, 05:05 PM	#572
EUVL diyAudio Member Join Date: Oct 2003	You can also use the ES9022 to drive a 100~200 ohm phone at normal or low listening level. But it won't drive a 32ohm Grado or an AK701. It will still make sound, but I would not call it music. Else why do I need to bother with the DAO SE ..... Patrick __________________ xen-audio.com

8th March 2013, 05:08 PM	#574
EUVL diyAudio Member Join Date: Oct 2003	No. Follower has no gain. Patrick __________________ xen-audio.com

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8th March 2013, 04:49 PM	#571
curryman diyAudio Member Join Date: Aug 2010	It's a Sennheiser HD480 classic (100Ohm). On Monday i'll test with Sennheiser HD650 and compare with electrostatic phones from Sennheiser with HEAD acoustics PEQ V with PVA IV.3 (it's a bit unfair ). Best regards, Daniel

13th March 2013, 03:02 PM	#575
diyskat diyAudio Member Join Date: Nov 2012	I wonder if anyone with access to proper measurement equipment could run and publish some performance measurements for Daniel's board (THD+N, IMD, DNR etc.) ?

14th March 2013, 12:09 AM	#577
diyskat diyAudio Member Join Date: Nov 2012	Thanks Daniel. It does look promising. I would still love to see someone run a similar testing methodology like nwavguy did for the ODAC. I know it is a long shot to ask as it would require time and access to a professional grade equipment. If your BOM is finalized and replicable, the test results could provide a good indication of what we can practically achieve with the board. BTW, are you planning to give this specific board a code name? I think I'm going to get one piece to try out. Just worried about replicating that ES9023 soldering feat in your photo.

2nd April 2013, 12:31 PM	#578
orangeart diyAudio Member Join Date: Jul 2010	Hi Curryman, I arrived here from your thread over in the mini DSP forum. Where are you at with this board? sound like just what I'm after to use with the new minisharc board and then out to my hypex modules. Stefan

2nd April 2013, 03:03 PM	#579
enjoybiking diyAudio Member Join Date: Feb 2011 Location: Madison, Wisconsin USA	Orangeart, the build-thread you seek is at: Build thread for ES9023 + JG Buffer boards (betatest)