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-   -   Schematic for Xiang Sheng Tube DAC Model "DAC-01A" wanted (http://www.diyaudio.com/forums/digital-line-level/216531-schematic-xiang-sheng-tube-dac-model-dac-01a-wanted.html)

tiefbassuebertr 20th July 2012 05:01 PM

Schematic for Xiang Sheng Tube DAC Model "DAC-01A" wanted
 
1 Attachment(s)
Who can post the associated schematic?
From the supplier xshn@xshn.com I get follow reply:
Hi, I am really sorry to tell you that we do not have the schematic diagram of the DAC-01A. But if you need some help, I think our engineers could help you. Please understand. With Best Regards, Spencer
Obviously the PCB producer isn't the same as the supplier.
Where I can I additional ask?

Here some URLs:
Hefei XiangSheng Electronic Co.,Ltd - Display - Products - DAC-01A Vacuum Tube Digital-to-Analog Converter/headphone amp
DAC-09 or XiangSheng DAC-01A ? - AudioKarma.org Home Audio Stereo Discussion Forums
Troubleshooting Xiang Sheng Tube DAC-01A - AudioKarma.org Home Audio Stereo Discussion Forums
Info on XiangSheng DAC-01
Stammtisch für HiFi- und Musik-Freunde | Digitale Quellen | Xiang Sheng Tube DAC-01A

erin 21st July 2012 12:27 PM

Probably the best delta sigma dac I ever heard. The tube really sorts things out. This dac kills everything else up to $1500, but only costs $200

I hope you find the schematic. This dac is a giant killer ( for the money)

Triodeasaurus 21st July 2012 12:54 PM

Quote:

Originally Posted by erin (Post 3099633)
Probably the best delta sigma dac I ever heard. The tube really sorts things out. This dac kills everything else up to $1500, but only costs $200

I hope you find the schematic. This dac is a giant killer ( for the money)

Plus one Erin.

Swapping 6N3P and 5670 is fun, and throwing the stock wima output caps in the bin for *insert better cap here* gives good results. I'm running Obligato .22 uF. Cheap caps, nice sound. 6N3PE Reflector go well, 1950's along with 5670 Raytheon.

tiefbassuebertr 13th August 2012 12:56 PM

I am still looking for the schematic.

After ten minutes the left channel is death. After switch-off and switch on again both channels works fine. Ten minutes later the left channel again is death.

What happens ??

erin 14th August 2012 01:41 AM

Did you use an oscilloscope to probe the output pins of the DAC chip?
It sounds like a dry solder joint.

May I respectfully advise that the correct word to use in the sentence above, would be dead, not death.

Eg, the channel is dead.

tiefbassuebertr 14th August 2012 07:06 AM

Quote:

Originally Posted by erin (Post 3125648)
Did you use an oscilloscope to probe the output pins of the DAC chip?
It sounds like a dry solder joint.

May I respectfully advise that the correct word to use in the sentence above, would be dead, not death.

Eg, the channel is dead.

english isn't my native language - nevertheless best thanks for your advices.
I will check this as soon as I get this device for service.

Who can post a schematic diagram?

tiefbassuebertr 12th February 2013 06:09 PM

Quote:

Originally Posted by tiefbassuebertr (Post 3098918)
Who can post the associated schematic?
From the supplier xshn@xshn.com I get follow reply:
Hi, I am really sorry to tell you that we do not have the schematic diagram of the DAC-01A. But if you need some help, I think our engineers could help you. Please understand. With Best Regards, Spencer
Obviously the PCB producer isn't the same as the supplier.
Where I can I additional ask?

Here some URLs:
Hefei XiangSheng Electronic Co.,Ltd - Display - Products - DAC-01A Vacuum Tube Digital-to-Analog Converter/headphone amp
DAC-09 or XiangSheng DAC-01A ? - AudioKarma.org Home Audio Stereo Discussion Forums
Troubleshooting Xiang Sheng Tube DAC-01A - AudioKarma.org Home Audio Stereo Discussion Forums
Info on XiangSheng DAC-01
Stammtisch für HiFi- und Musik-Freunde | Digitale Quellen | Xiang Sheng Tube DAC-01A

no news??

erin 13th February 2013 01:34 AM

Quote:

Originally Posted by erin (Post 3125648)
Did you use an oscilloscope to probe the output pins of the DAC chip?
It sounds like a dry solder joint.


Quote:

Originally Posted by tiefbassuebertr (Post 3125837)
I will check this as soon as I get this device for service.

and so did you check it?

tiefbassuebertr 29th March 2013 09:44 AM

Quote:

Originally Posted by erin (Post 3125648)
Did you use an oscilloscope to probe the output pins of the DAC chip?
It sounds like a dry solder joint.

May I respectfully advise that the correct word to use in the sentence above, would be dead, not death.

Eg, the channel is dead.

Yes, this was the reason. After resolder all solder joints arround the CS8416 (receiver Chip) and CS4398 (DAC) the device works fine in all respects.

BTW - I AM STILL LOOKING FOR THE schematic:
cHINESE MAUFACTURERS DON#T LEAVE THEIR SCHEMATICS IN MOST CASES:
wHO KNOW THE ACTUALLY MANUFACTURER OF THE pcb ITSELF

Sayang67 29th September 2013 02:50 PM

Re: modding the DAC01A
 
1 Attachment(s)
Hi all,

First time poster here. I have an interesting problem with this DAC and I hough I'd hijack this thread instead of starting a new one.

First off, I should say I have no experience in diyaudio, so I apologize in advance for being unclear or misusing words.

So this DAC was recommended to me by a forum member as a DAC and preamp solution. Many might know that there are versions of this out here that are identical in design to the Grant Fidelity tubedac09 and that there are instructions on how to convert the volume pot so that it controls both the headphone amp as well as the various sources the DAC can accept. There are three different versions on the GF sight, complete with pictures and instructions on how to move the jumper cables to make this happen.

So I bought one off eBay only to find the innards completely different from the three versions on huge GF site. I'll post the pic here, but it seems to my ignorant eyes the same as what the OP showed above.

So...does anyone have any experience or idea how to mod this design? I emailed the manufacturer and I was told the mod is not possible.

Any help would be appreciated. I could always use it as a tube buffer and get a separate preamp, but I bought it in the first place as an economical solution to having both a tubedac and preamp.

Cheers, Chris


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