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Old Today, 01:13 PM   #1
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Default GR DAC-END 24

Hi All!
INTRODUCTION

No Oversampling project based on the AD1865 chip.
The No Oversampling DAC give a more natural sound but if you ear the Phlips DAC chips like the TDA1541 and the TDA1543 in this configuration seem to lose details.
The AD1865N-K with passive I/V give a perfect combination, natural sound and all all the details.
This DAC chip is used also by Audio Note in all the production range.
So if you want to continue to use the CD player because you have many CD and you are not interested to play the few DSD files available on the market, this project will give you the best sonic experience.
You can also connect the PC on USB input to play Hi-Resolution PCM tracks.
It is necessary a vacuum tube stage on output to have the standard 2Vrms but here you can find many solutions like SRPP or single ended.

The AD1865 DAC previous version:
1. DAC-END V1 with LL1660 output :
DAC End - the AD1865N-K with single ended vacuum output stage
2. DAC-END V2 :
DAC End 2 - the AD1865N-K with single ended vacuum output stage

And now : DAC-END 24

DAC End 24 PCM DAC

Description:
DAC AD1865 unit accept 192KHz input with operate NOS (non-oversampling) mode.

Structure:
Digital input:
1 x coaxial input,
1 x Optical
1 x AES/EBU- Balance in put
1 x USB Amanero
1 x selected in put
1x Cs8416
1x HQ-01 Transfomer supply: 0-6V*2
Analog output : R IV passive
Digital section :
using AD1865
digital receiver CS8416
Amanero USB

DAC module assembled and tested with all components
Attached Images
File Type: jpg Overview-design-DAC-24-AD1865.jpg (313.0 KB, 17 views)
File Type: jpg DAC-end24.2.jpg (339.0 KB, 17 views)
File Type: jpg DAC-end24.3.jpg (367.1 KB, 17 views)
File Type: jpg DAC-end24.6.jpg (358.9 KB, 18 views)
__________________
Group buy DAC-END R (ES9018) full assembled board
update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html

Last edited by quanghao; Today at 01:19 PM.
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Old Today, 02:00 PM   #2
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Here is the circuit
Attached Images
File Type: jpg SCH-DAC-END24-I2S-ok.jpg (414.6 KB, 11 views)
File Type: jpg SCH-Supply-DAC-END24-I2S.jpg (285.9 KB, 6 views)
__________________
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 Today, 02:13 PM   #3
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Join Date: Sep 2009
Location: Vietnam
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Now, I'm ready 15 DAC end kit as follows:

1. DAC-end kit 24 include:
Kit complete DAC, such as images include:
The connectors, chip CS8416, Transformers power, input switching, no chip AD1865. All are running well, and testing.
Price: $ 250

2. USB amanero: $ 60

3. Shipping worldwide with TNT: $ 50

You are interested, please sign up to your list to help me!

Thank you very much!
quanghao
Attached Images
File Type: jpg Kit DAC-END 24 no chip AD1865.jpg (710.0 KB, 5 views)
File Type: jpg Amanero on DAC-END 24.jpg (79.5 KB, 4 views)
__________________
Group buy DAC-END R (ES9018) full assembled board
update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html
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