Go Back   Home > Forums > > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

Reply
 
Thread Tools Search this Thread
Old 2nd June 2015, 01:13 PM   #1
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
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, 751 views)
File Type: jpg DAC-end24.2.jpg (339.0 KB, 722 views)
File Type: jpg DAC-end24.3.jpg (367.1 KB, 691 views)
File Type: jpg DAC-end24.6.jpg (358.9 KB, 671 views)

Last edited by quanghao; 2nd June 2015 at 01:19 PM.
  Reply With Quote
Old 2nd June 2015, 02:00 PM   #2
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
Here is the circuit
Attached Images
File Type: jpg SCH-DAC-END24-I2S-ok.jpg (414.6 KB, 690 views)
File Type: jpg SCH-Supply-DAC-END24-I2S.jpg (285.9 KB, 289 views)
  Reply With Quote
Old 2nd June 2015, 02:13 PM   #3
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
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, 326 views)
File Type: jpg Amanero on DAC-END 24.jpg (79.5 KB, 202 views)
  Reply With Quote
Old 6th June 2015, 12:41 AM   #4
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
Default more informatio DAC-End and DAC-end 24

http://www.diyaudio.com/forums/quang...-ciuffoli.html

http://www.diyaudio.com/forums/quang...-2011-a-5.html

http://www.diyaudio.com/forums/quang...5-nos-dac.html
  Reply With Quote
Old 6th June 2015, 10:26 AM   #5
Artur5 is offline Artur5
diyAudio Member
 
Artur5's Avatar
 
Join Date: Jun 2014
Location: Catalonia
Isn't the AD1865 a 18 bit DAC ?. Calling this unit DAC-END 24 is a bit misleading. Sure, the CS8416 will decode 24 bit data but the AD1865 accepts only 18.
Therefore, the output of the CS8416 must be configurated to send only the 18 more significant bits to the AD1865.
24 bit compatible would be a better name for this kit.
  Reply With Quote
Old 10th June 2015, 03:01 PM   #6
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
Quote:
Originally Posted by Artur5 View Post
Isn't the AD1865 a 18 bit DAC ?. Calling this unit DAC-END 24 is a bit misleading. Sure, the CS8416 will decode 24 bit data but the AD1865 accepts only 18.
Therefore, the output of the CS8416 must be configurated to send only the 18 more significant bits to the AD1865.
24 bit compatible would be a better name for this kit.
NO!

i use some 74HC164 for bit to AD1865,

Here is the schematic to see, some value is incorrect!
Thank you!
Attached Images
File Type: jpg SCH-AD1865-24-with-I2S.jpg (281.8 KB, 211 views)
  Reply With Quote
Old 17th June 2015, 11:46 AM   #7
chim is offline chim
diyAudio Member
 
Join Date: Oct 2013
I have interest in this. Pls PM me.
  Reply With Quote
Old 18th June 2015, 01:21 AM   #8
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
Quote:
Originally Posted by chim View Post
I have interest in this. Pls PM me.
hi!

what i can hepl you ??

you need kit DAC + USB or only kit DAC whithout chip ad 1865!

please say to me!

thanks
  Reply With Quote
Old 20th June 2015, 02:43 PM   #9
quanghao is offline quanghao  Viet Nam
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
GR DAC-END 24 Send a message via Yahoo to quanghao GR DAC-END 24
Quote:
Originally Posted by chim View Post
I have interest in this. Pls PM me.
Hi chim !
The DAC 24 have:
one tranfomer in PCB
all RCA and toxl and balance jac IN PUT (all connectors in put .
the kit tested.
The case you can DIY

you only need chip AD1865 and connect to iv or pre and you listen to music
thanks
  Reply With Quote
Old 17th August 2015, 10:26 AM   #10
baMarek is offline baMarek  Australia
diyAudio Member
 
Join Date: Feb 2009
Hi Quanghao,

1. How do you compare the sound of this DAC with your previous ES9018?
2. What is the voltage on the output?
3. If I use 2 of those DACs in 4 channel config, do I need to connect them with the same clock or it is not necessary with this chip?
  Reply With Quote

Reply


GR DAC-END 24Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Toshiba 2SK389 -GR, 2SA1349 -GR, 2SC3381 -GR JohanB Swap Meet 316 19th September 2018 12:40 AM
DAC-END 24 (AD1865 NOS DAC ) quanghao Quanghao Audio Design 62 22nd June 2018 09:05 AM
FS quanghao DAC end 24 PCB Myint67 Swap Meet 7 3rd December 2014 12:24 PM
Experience with NEW Hi end DAC 24 BIT 192K HZ AK4396 sc Ryssen Digital Line Level 2 16th August 2011 10:33 PM


New To Site? Need Help?

All times are GMT. The time now is 10:51 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki