OLD THREAD DAC End by Andrea Ciuffoli - Page 2 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Quanghao Audio Design

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 5th December 2009, 06:28 AM   #11
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
Blog Entries: 2
Send a message via Yahoo to quanghao Send a message via Skype™ to quanghao
Quote:
Originally Posted by MarkLai View Post
Hi Quanghao,
Count me for 2 sets please. Thanks for organise this.
Mark
Ok!
Thank! well come to!
  Reply With Quote
Old 5th December 2009, 06:33 AM   #12
EUVL is offline EUVL  Europe
diyAudio Member
 
Join Date: Oct 2003
USD30 for 2 double layer boards from Vietnam is not exactly cheap ......
Maybe you could tell us how much less if you manage 30 sets ?


Patrick
  Reply With Quote
Old 5th December 2009, 10:31 AM   #13
Tea-Bag is offline Tea-Bag  United States
not politcally affiliated
diyAudio Member
 
Tea-Bag's Avatar
 
Join Date: Feb 2006
Location: Kennebunk
Blog Entries: 7
Quanghao,
Can you explain how this design is different than Andrea's?
It appears simpler, I see no tubes or output transformers.
__________________
Salas Boards 2014 #3 Here to Sign Up! |F5TC Boards and power supplies available PM| Hot-Rod DCB1 boards and kits available PM |Mesmerize kits available (no boards)
  Reply With Quote
Old 5th December 2009, 03:51 PM   #14
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
Blog Entries: 2
Send a message via Yahoo to quanghao Send a message via Skype™ to quanghao
Quote:
Originally Posted by Tea-Bag View Post
Quanghao,
Can you explain how this design is different than Andrea's?
1. No! Dont different, I only use Tl431 shunt, should have 6 separate power supplies.
You can use supply +-5V conect to the board, it is ok

It appears simpler, I see no tubes or output transformers.
2. Tube and out tranformer. I make it in other board
  Reply With Quote
Old 7th December 2009, 05:11 AM   #15
diyAudio Member
 
Join Date: Sep 2006
If you can ship to th USA, I'm in for 2

JD
  Reply With Quote
Old 7th December 2009, 05:41 AM   #16
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
Blog Entries: 2
Send a message via Yahoo to quanghao Send a message via Skype™ to quanghao
Quote:
Originally Posted by Jeffrey Davison View Post
If you can ship to th USA, I'm in for 2

JD
Ok! i can! thank
  Reply With Quote
Old 7th December 2009, 09:18 AM   #17
cjunkk is offline cjunkk  Italy
diyAudio Member
 
Join Date: May 2006
Location: Pisa
Hello,
i am interested in one set (and in the tube output stage).

Carlo
  Reply With Quote
Old 9th December 2009, 12:48 AM   #18
diyAudio Member
 
Join Date: Sep 2009
Location: Vietnam
Blog Entries: 2
Send a message via Yahoo to quanghao Send a message via Skype™ to quanghao
Quote:
Originally Posted by cjunkk View Post
Hello,
i am interested in one set (and in the tube output stage).

Carlo
Ok! you can see layout
Attached Images
File Type: jpg DAC-END-IV-stage.jpg (237.7 KB, 2191 views)
File Type: jpg Chuan-bi-lam-DAC-End.jpg (191.4 KB, 2087 views)
File Type: jpg IV-for-DAc-END-c.jpg (65.9 KB, 1828 views)
__________________
Group buy DAC-END R (ES9018) full assembled board
update 06/14/2013 :http://www.audiodesignguide.com/DAC32/index2.html
  Reply With Quote
Old 9th December 2009, 02:37 AM   #19
FAA is offline FAA
diyAudio Member
 
FAA's Avatar
 
Join Date: Oct 2009
How much for 1 set ( 4 pcb)? thanks
  Reply With Quote
Old 9th December 2009, 02:47 AM   #20
diyAudio Member
 
Join Date: Aug 2002
Location: Jakarta, INDONESIA
Send a message via ICQ to TjongKristian
Let me in for 2 sets.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
OLD THREAD Hi-end phono preamplifier by Andrea Ciuffoli quanghao Quanghao Audio Design 404 29th September 2014 07:08 AM
Cleo: End to End 24bit 192khz USB DAC with tube output bcherry DIY HiFi Supply 7 3rd July 2010 11:15 PM
The DAC End 2 by Andrea Ciuffoli pcb + most parts... prooptiki Swap Meet 7 31st May 2010 02:21 AM
Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP.... zxcxz Tubes / Valves 2 10th July 2009 04:14 PM
Andrea Ciuffoli Mosfet Amp DieterD Solid State 16 24th December 2001 05:56 AM


New To Site? Need Help?

All times are GMT. The time now is 12:53 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2