CM6631 with ES9023?

[sharpi31]

What about....

DAC-24192-ULN, 24Bit/192KHz DAC, I2S Input, Ultra Low Noise Regulator Circuit | eBay

+

CM6631 USB DAC Coaxial fiber 192KHz/32bit(I2S) 192K(24BIT)SPDIF WLX-66 | eBay

Any reason why these wouldn't work together to make an asynchronous USB 24/192 ES9023 dac?

 

[KlipschKid]

No reason they won't work. But how well for the money.
ÉÙ˧ÒôÏì mini usb dac TE7022L+ES9023 ÃÔÄã°æ-ÌÔ±¦Íø

 

[sharpi31]

TE7022L is 24/96 max and jitter prone. CM6631 is 32/192 and asynchronous, although i believe the dac will only work with 24/192. As I understand it the TE7022L would hold back the ES9023 substantially, making the CM6631 solution much better value.

 

[KlipschKid]

sure. then again, the tenor can be isolated on the usb side at 96khz whereas the cm will have to run at 48khz even if you can make it work isolated. Stick a tent labs xo on the tenor and it's a whole different thing.

That es9023 looks okay but it has like US$10 parts for $S$50, and the cm6631 looks about as crap as any i've seen. it has noisy regulators and cheap 12mhz crystal and there's probably bad routing, grounding, etc.

So in theory it should sound better but in reality it may not. Buy it and find out. It's only money.

 

[sharpi31]

I ended up buying these pcbs.....

24bit 192kHz USB to I2S / SPDIF PCB CM6631 with ultralow noise 6.5uV regulator | eBay

DAC-24192-ULN, 24Bit/192KHz DAC, I2S Input, Ultra Low Noise Regulator Circuit | eBay

I downloaded the diyinhk cm6631a drivers but had glitches at all sampling rates on two windows 7 64bit laptops (not normal laptop noise, actual interruptions to the stream). Rebooting into Ubuntu has solved the problem completely, and the Dac sounds nice - quite solid sounding yet open and clean.

 

[sharpi31]

Photo below....

 

[azimut]

Have you done a comparison with the 9023 hifimediy?

 

[Hugh Jazz]

Sharpi31 - good project.

Can I suggest ?

It is good to twist audio wires into a twisted pair. Your wires have not any twist. Twist power/ground together. Twist signal/ground together.
It is good for digital to have one ground wire for every signal wire. You can use flat cable or twisted pair. All short as possible.

ES9023 can sound better with asynch mclk - 50Mhz SAW from Epson use as mclk into DAC. Maybe you want to try ? You change quite easy and it is not expensive.

Also to try, if you want, is output cap (green Wima ?). Relcap RTE must sound good. Mundorf also. But this not so cheap.

 

[luxury54]

where can these 50 mhz epson clocks be sourced from ? do you have a link perhaps ? thanks

 

[Beau]

Sharpie31, did you have any issues running this setup under Linux?
Im looking to do a similar setup and it seems nobody can get the cm6631 working reliably under Ubuntu.

 

[Hugh Jazz]

where can these 50 mhz epson clocks be sourced from ? do you have a link perhaps ? thanks

Epson XG-1000CA

Crystals and Oscillators | Oscillators | DigiKey