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Old 16th August 2010, 12:49 PM   #1
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Default DAC-ASH (dac-end 2 up date)

Hello beautiful by mistake during installation of dat DAC-END up, I called up date-end DAC DAC-2 is ASH, so please discuss here.
DAC-ASH is mean Andrea-Salas-quanghao
Thanks a lot.
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update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html

Last edited by quanghao; 16th August 2010 at 12:56 PM.
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Old 16th August 2010, 04:02 PM   #2
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Quote:
Originally Posted by quanghao View Post
Hello beautiful by mistake during installation of dat DAC-END up, I called up date-end DAC DAC-2 is ASH, so please discuss here.
DAC-ASH is mean Andrea-Salas-quanghao
Thanks a lot.
Thank you Quang Hao,

now we have our thread for the last DAC version, the "END-DAC 2".
You can put fotos of the PCBs, the schematics and the BOM here?

Klaus
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Old 16th August 2010, 04:42 PM   #3
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Default This cricuit of DAC-ASH (DAC-end updat)

This circuit of DAC-ASH (DAC-end updat)
In this new PCB, I used six separate sources for each chip Salas AD1865, 74HC04, CS8414.
Please see diagram!
Attached Images
File Type: jpg DAC-END-(ash).jpg (245.2 KB, 3285 views)
File Type: jpg Salas shunt for DAC-ASH.jpg (336.4 KB, 3087 views)
File Type: jpg PCB DAAC-ASH.jpg (142.3 KB, 2865 views)
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Group buy DAC-END R (ES9018) full assembled board
update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html

Last edited by quanghao; 16th August 2010 at 04:54 PM.
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Old 16th August 2010, 04:56 PM   #4
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Forgive a beginner's question, would the DAC-ASH work without the I/V stage? Namely, would it possible to bulid using 1 PCB and "upgrade" later? or it has to be two boards simutaneously.

Quote:
Originally Posted by quanghao View Post
This circuit of DAC-ASH (DAC-end updat)
In this new PCB, I used six separate sources for each chip Salas AD1865, 74HC04, CS8414.
Please see diagram!
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Old 16th August 2010, 05:04 PM   #5
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Originally Posted by parodielin View Post
Forgive a beginner's question, would the DAC-ASH work without the I/V stage? Namely, would it possible to bulid using 1 PCB and "upgrade" later? or it has to be two boards simutaneously.
Yes! that is fine!

The IV stage i use parallel Composite-Triode, can use tube 6h6pi, 6h30pi, 6dj8
Attached Images
File Type: jpg IV-stage-for-DAC-ASH.jpg (288.9 KB, 2775 views)
File Type: jpg PCb Iv stage for DAC-ASH.jpg (159.9 KB, 2563 views)
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Group buy DAC-END R (ES9018) full assembled board
update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html
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Old 16th August 2010, 05:41 PM   #6
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Quote:
Originally Posted by parodielin View Post
Forgive a beginner's question, would the DAC-ASH work without the I/V stage? Namely, would it possible to bulid using 1 PCB and "upgrade" later? or it has to be two boards simutaneously.
Yes, you can buy only the DAC and later put the I/V board or use other buffer board of your choise.
The boards are independent with their own power supply, you also can use the I/V board like a Pre.

Klaus
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Old 16th August 2010, 05:58 PM   #7
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Originally Posted by klaju1955 View Post
Yes, you can buy only the DAC and later put the I/V board or use other buffer board of your choise.
The boards are independent with their own power supply, you also can use the I/V board like a Pre.

Klaus
In fact, my connection would be:

Computer -> USB (Teralink X2 -> SPDIF) -> DAC -> Pass B1 Buffer -> Class D -> 4 Ohm speakers

And

CD Player (SPDIF) -> DAC -> Pass B1 -> Class D -> 4 ohm speakers

I can build DAC only to make the above work. I can add I/V stage after DAC in the future. That simplifies the process a little bit and is more managable for beginners.

I tried to BOM the DAC over the weekend, but there are some components that I couldn't find over Mouser or Digikey.
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Old 16th August 2010, 06:13 PM   #8
Strosek is offline Strosek  Canada
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Thank you for this new thread Quanghao!!

All we need now is an updated BOM with the few typos corrected and we're off to the races!
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Old 16th August 2010, 06:40 PM   #9
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What is with the diagramm of the I/V SSHV power supply?
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Old 16th August 2010, 06:42 PM   #10
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Originally Posted by Strosek View Post
Thank you for this new thread Quanghao!!

All we need now is an updated BOM with the few typos corrected and we're off to the races!
Eaagerly waiting. Any plan for getting the chips? I saw a few group buy on the AD1865. Are we in a stage that reputable eBay sellers are there?

How long does it take for the DAC ASH PCB to show up in the States?
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