Anybody using the new ESS Vout DAC (ES9022)?

[ra7]

I can't seem to find the mention of the ess chip in the udac. Jkeny, do you have a source?

I'm sitting on the fence between the super pro and the udac.

 

[jkeny]

ES9022 chip but Nuforce seem to have scratched the ID off the chip AFAIK 🙁 Have a search in this thread http://www.head-fi.org/forums/f7/fi...-udac-usb-dac-amp-line-out-s-pdif-out-456945/

 

[tritosine]

How's SNR and DNR different? That just doesnt add up. Looks like the DA part has worse thd than the builtin opamp, similar opa365 has thd in ppm range.

EDIT: 98SNR because of the 16/44 usb codec ? -ridicoulus.
- at least they should reveal a level vs thd plot .

 

[EUVL]

Someone tested a ES9022 modules from me and here is what he has to say :

http://www.diyaudio.com/forums/digi...card-16-44-1-wav-transport-3.html#post2167975

😉


Patrick

 

[Woodenhead]

Finally got my finger out, and had a listen to this 9022 dac on a little pcb I made...

An externally hosted image should be here but it was not working when we last tested it.

I read about the 50Mhz local XO for the 9022 the day after I sent the files off for pcb manufacturing, currently using the 12Mhz from the receiver.

I'm using spdif in as I have plenty of spdif sources, using a wm8804 as the receiver.

Excuse the mess on the PCB, I had a duff 8804 initially. Using a simple 3v3 reg for the three 3v3 lines (two for the 8804, one for the 9022)

Very pleasant sound, and driving headphones directly, which is a surprise!

This is the first circuit I've designed myself from scratch, so quite pleased that it works!

 

[jkeny]

Well done Will.
You will be better served with a lower jitter clock.
Even better served feeding it I2S directly from source
Yes it drives most headphones!

 

[Woodenhead]

Thanks John.

I've no i2s sources, so went with the wm8804 so that I can give this dac a try. It's a nice, musical sound, way beyond it's price.

I have a 50Mhz XO on the way, and it'll be easy to drop the feed onto the 9022.

 

[AR2]

Has anyone had a chance to compare AKM 2496 to ESS 9022? I know it is a long shot but maybe there is someone out there...

 

[EUVL]

Can you get one (AK2496) ?

Patrick

 

[woodturner-fran]

Woodenhead: I'm in the same situation as you with plenty of SPDIF sources.... would you have one of your boards for sale?

Fran

 

[EUVL]

I shall publish my WM8804 design (tailored to fit my ES9022 module) in about a month's time.

Patrick

 

[Woodenhead]

Hi Fran,

I've no-more pcb's left, as the other four I made went to some other audio friends. I'd be happy enough (now that they are proven to work!) to do a run of them if there is enough interest.

Cheers,

Will

 

[woodturner-fran]

Good stuff - yes I'd be interested in one if you decide to make a few...

 

[EUVL]

Standard ES9022 Modules

To ease the hunger of the waiting crowd, here are some latest pictures.

Shown here 2 standard modules with 50MHz low jitter XOs, separate LT1761 regulators, Murata MLCC capacitors, Susumu thin film SMD resistors, ultra-low ESR conductive polymer eletrolytics, and WIMA FKP2 output filtering caps .......


Patrick

 

[EUVL]

SPDIF Receiver

Shown here the same standard ES9022 with a matching WM8804 (waiting for the Rx IC) in stand alone mode, with 2x LT1761s and 12MHz Citizen crystal.

 

[EUVL]

ES9022 in Synchronuous Mode

An advanced version of the ES9022 module using a 45.1584MHz XO and 2 ultra-fast single-gate Flip-Flops on a daughter board for dividing down to 11.2896MHz (to replace the TCXO in the QA550).


Patrick

.

 

[qusp]

lovely neat work as usual Patrick, I would be interested in one of these perhaps to run the sub channel for my 3 ways. nice and neat and small, so could be easily built into the amp. that or ackos AKD24 using the same chip. which isnt quite as small though

am I right in assuming these are designed to slot into the SD reader? so with external battery pack you could have full blown portable solution with headphone amp given something to buffer/drive the output?

 

[EUVL]

ES9022 Balanced

Yet another advanced version using a second level PCB with the 2nd ES9022 fed with inverted data from a single gate 741G04 (with its own LT1761 PSU).

The WIMA FKPs are soldered directly on the pins of the XLR connector.


Patrick

 

[EUVL]

> am I right in assuming these are designed to slot into the SD reader?

Yes.

Patrick


PS All modules shown have already been reserved months ago. Sorry for the delay guys.

 

[qusp]

thats what i'm talkin' about!! good work mate, I was actually going to ask about balanced output