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Quanghao Audio Design Quanghao Audio Design is a producer of DIY Audiophile Kits and PCB boards, selected from many listening tests!

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Old 11th December 2009, 02:32 AM   #31
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Quote:
Originally Posted by toufu View Post
Quanghao, I would like 1 set (4pcbs) plus 2 sets of output and output regulator. I am in the US. Thank you!
Ok! thank!
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update 21/5/2013 : https://docs.google.com/spreadsheet/...FE&hl=en#gid=0
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Old 12th December 2009, 04:09 AM   #32
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Quote:
Originally Posted by quanghao View Post
Ok! thank!
Iv stage Board
Attached Images
File Type: jpg Iv-3.jpg (213.1 KB, 1167 views)
File Type: jpg Iv1.jpg (185.7 KB, 1103 views)
File Type: jpg Iv2.jpg (203.3 KB, 1081 views)
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Old 12th December 2009, 11:40 AM   #33
Tea-Bag is offline Tea-Bag  United States
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Quanghao, Are all these boards needed to make a Dac?
Is there a solid state output version?
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Old 12th December 2009, 11:32 PM   #34
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Quote:
Originally Posted by Tea-Bag View Post
Quanghao, Are all these boards needed to make a Dac?
Is there a solid state output version?
Yes! but the I/v stage by SRPP tube is one otion! You can choice or No!
, I still do Iv stage, as the author- Andrea Ciuffoli use tube E182CC, scould I use a tube or other easy to find and cheaper!
But the sound is good!
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Old 14th December 2009, 09:41 AM   #35
Jolojl is offline Jolojl  Sweden
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Hi quanghao!

It looks like you have added an analog filter to the original design (on DAC board, choke and capacitor) ... Is that so? Why? And can it be by-passed?

Best!
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Old 14th December 2009, 01:48 PM   #36
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Quote:
Originally Posted by Jolojl View Post
Hi quanghao!

It looks like you have added an analog filter to the original design (on DAC board, choke and capacitor) ... Is that so? Why? And can it be by-passed?

Best!
YES! That is one option, you can choice or no! I make it for many pople can use!
When You use I/v which tranformer you dont need filter.
You use I/v normal Tube or OP , you can use this option! If you like!
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Old 14th December 2009, 09:55 PM   #37
Jolojl is offline Jolojl  Sweden
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Quote:
Originally Posted by quanghao View Post
YES! That is one option, you can choice or no! I make it for many pople can use!
When You use I/v which tranformer you dont need filter.
You use I/v normal Tube or OP , you can use this option! If you like!
OK! Thanks! I'll order a kit when I can!
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Old 14th December 2009, 10:12 PM   #38
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Need to know when they're ready and where / how to make payment.

Great Job!

Jeff Davison
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Old 15th December 2009, 03:16 AM   #39
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Hi all! At the moment the first units are in production and the DAC-END can start.

Information:
A. The PCB has the following data:
Material: FR4 - 1.6mm
Layers: 2 and 1
Board size: 95x110 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - Red
Silkscreen: Legend on top

B. The price will be as followed:
On set (4PCB)
1. PCB- DAC END =$15
2. PCB- Salas Shunt For DAC=$15
3. PCB- I/V stage =$15
4. PCB- 10M45 for I/V= $10
5. Worldwide shipping: $ 5
6. paypal fee: 3,5%

A donation of $2usd to diyAudio will be done for every DAC-END pcb sold
A gift $1 for Salas contribute to diyAudio,I thank Salas very much.

Pre-Orders only at papal: quanghao168@yahoo.com.vn

Best regards to the community
Quanghao
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Group buy DAC-END R (ES9018) full assembled board
update 21/5/2013 : https://docs.google.com/spreadsheet/...FE&hl=en#gid=0
Last edited by quanghao; 15th December 2009 at 03:40 AM.
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Old 15th December 2009, 03:30 AM   #40
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Quote:
Originally Posted by quanghao View Post
Hi all! At the moment the first units are in production and the DAC-END can start.

Information:
A. The PCB has the following data:
Material: FR4 - 1.6mm
Layers: 2 and 1
Board size: 95x110 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - Red
Silkscreen: Legend on top

B. The price will be as followed:
On set (4PCB)
1. PCB- DAC END =$15
2. PCB- Salas Shunt For DAC=$15
3. PCB- I/V stage =$15
4. PCB- 10M45 for I/V= $10
5. Worldwide shipping: $ 5
6. paypal fee: 3,9%

A donation of $2usd to diyAudio will be done for every DAC-END pcb sold
A gift $1 for Salas contribute to diyAudio,I thank Salas very much.

Pre-Orders only at papal: quanghao168@yahoo.com.vn

Best regards to the community
Quanghao
I'm starting saving money for it.....
What bout all component cost? in US $ please....
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