Hifimediy direct out cs4398 DAC

[hifimediy]

when will this be available?

I will make the demo/sample board soon, will post the photo then.

Looking good. I have an Audio-gd DAC that swaps out a DIR9001 receiver or a Wolfson. The DIR9001 is clearly better in that DAC. Have you all considered using it? This looks to be a very fun project. How many amps will the 9V power supplies need? Any plans for some nice power supply boards to go along with the DAC? I have been wanting toi build a supper integrated and I see the HiFiMe products lending themselves very well to that project.

I think WM8805 and DIR9001 are at same level, both have very low jitter. We will start with WM8805 first because I used this chip before and it's good. About 10VA PSU is ok for this DAC. And actually I'm thinking about a PSU for DAC, use a on board transformer, hope it will start at the end of this month.

 

[cOz]

I will make the demo/sample board soon, will post the photo then.

Any photos?

 

[squatt3r]

maybe bundle both PSU and the DAC together in one board

 

[cOz]

Does anyone have any links for good 9v transformers?

 

[Veggiel]

Will it be able to use I2S input for integration with a miniDSP?

 

[hifimediy]

hi, just got pcb today

I still have some part on the way
And hi Veggiel, it's not support I2S input.

 

[cOz]

Is this transformer a good option? 115V/230V 40W Audio R-Core Transformer 9V-0-9V 9V*3 | eBay

 

[hifimediy]

Is this transformer a good option? 115V/230V 40W Audio R-Core Transformer 9V-0-9V 9V*3 | eBay

I think it's ok.

 

[nrg2009]

awesome concept.

 

[j45yip]

...have you considered the module concept like what twisted pear is doing with their Buffalo III DAC? let users have the option of using their preferred PSU like

Sala's SSR1.1 BiB shunt reg

http://www.diyaudio.com/forums/group-buys/188974-gb-thread-salas-ssr1-1-bib-shunt-reg.html

I will make the demo/sample board soon, will post the photo then.

 

[hifimediy]

...have you considered the module concept like what twisted pear is doing with their Buffalo III DAC? let users have the option of using their preferred PSU like

Sala's SSR1.1 BiB shunt reg

http://www.diyaudio.com/forums/group-buys/188974-gb-thread-salas-ssr1-1-bib-shunt-reg.html

I don't think so. DA-X0 support different DAC chips by changing module, and support TCXO on board. It doesn't have analog buffer, so make power supply very simple(easy to use).

 

[hifimediy]

update

Hi all. I test the cox input today, and set CS8421 to output 96kHz, it's not bad, but when I set it 192kHz, the music sound discontinuous. Also when 44.1kHz signal input, there will be some noise on output because I'm using 24.576Mhz OSC for up-sampling. And all problem is gone when CS8421 is bypassed. In general, I think it will be a good DAC. I will do more work to make it better later.

 

[hifimediy]

photo

 

[hifimediy]

Finally got it done.
Now upsampling to 192kHz and work very good.
Also I got TCXO samples shows below.

 

[squatt3r]

when will this be available?

 

[hifimediy]

soon, will test usb part next.

 

[hifimediy]

usb ok

here we go.

 

[Nick122147]

I will receive a first working sample in a few days, looking forward to try this DAC !
Thanks to everybody for feedback and advice.
This DAC will be possible to make in different versions, with/without TE7022 USB, with/without CS8421 upsampling, and with/without TCXO oscillator. This board can also be used with different DAC's (voltage output only) but we'll start with CS4398.

 

[squatt3r]

any timelines on when this DAC gonna be available in the hifidiyme website?

 

[nrg2009]

great, keep us posted.