ebay: WEILIANG Dual X2 AK4399 DAC with LCD - Page 2 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th March 2014, 10:13 PM   #11
ttan98 is offline ttan98  Australia
diyAudio Member
 
Join Date: Apr 2006
Location: Melb
Quote:
Originally Posted by keres View Post
Yes, I also have 4x8200 caps I use it with Udoo + Volumio + xmos ak4399 interface and the combination result is amazing.
Imho, the sound is very good also in the single dac akm version, the dual have a bit more large soundstage, but difference in my opinion is not nigth and day.
Also my single version have the same elnas caps upgrade.
Ciao


Inviato dal mio SM-N9005 utilizzando Tapatalk
By the way what is Udoo and Volumio, directly available off ithe shelf if so, please directly me to the websites that sell them. Thanks
  Reply With Quote
Old 15th March 2014, 11:15 PM   #12
diyAudio Member
 
Join Date: Apr 2010
http://volumio.org/

Inviato dal mio SM-N9005 utilizzando Tapatalk
  Reply With Quote
Old 21st March 2014, 08:33 PM   #13
diyAudio Member
 
Join Date: Apr 2010
Anyone with more experience....
I want try the ada4637 in this dac.
ADA4637-1BRZ requires special application condition (gain >/= 5)
Is it an opamp electrically compatible with the weiliang dac ak4399?

Inviato dal mio SM-N9005 utilizzando Tapatalk
  Reply With Quote
Old 1st April 2014, 07:26 AM   #14
diyAudio Member
 
Sunsun22's Avatar
 
Join Date: Jul 2004
Location: Hong Kong
Default Dual AK4399 DAC

This little DAC beats all my previous DACs - TDA1541, dual TDA1541 (double crown), AD1865, 1794, dual 1794 and Benchmark (first generation) with exception of the AD1865 which; in my opinion, a bit better on vocal (perhaps may due to tube output of this AD1865).

When it arrives, it is a bit misty but I can see it has a good potential to modify. In a few weeks time, it ran through the following upgrades: -

Changing the plastic opamp to TO-99 (LME49710HA). I don't have other opamps on hand and this is the only opamp I tried. The TO-99 has more dynamic.

Changing the regulators to Belleson SPM series 15V. The high extended and the low is trimmed.

Changing all regulators to Dexa and Belleson. In fact, the 7805 is a pre-regulation that it could be left as is but I just have a Dexa 7805 spare. At the same time, I also changed the cap of the opamps to Blackgate 47uF 16V, all 0.1uF to Vishay MKP1837 and rectifiers to BVY27-200. More details, more dynamics and musical.

I have a few HiFi friends visited me after the overall modification and eventually I ended up buying 4 more units for them.

My next step - There is a larger case available for this DAC in the market that I will purchase one and try out tube output.
Attached Images
File Type: jpg AK4399.jpg (165.8 KB, 628 views)

Last edited by Sunsun22; 1st April 2014 at 07:36 AM.
  Reply With Quote
Old 1st April 2014, 07:34 AM   #15
diyAudio Member
 
Sunsun22's Avatar
 
Join Date: Jul 2004
Location: Hong Kong
Default Larger case for AK4399

This is the larger case (full size) available in the market.
Attached Images
File Type: jpg AK4399 large case.jpg (51.6 KB, 626 views)
  Reply With Quote
Old 1st April 2014, 09:16 PM   #16
diyAudio Member
 
Join Date: May 2011
Quote:
Originally Posted by Sunsun22 View Post
When it arrives, it is a bit misty but I can see it has a good potential to modify.
I just received this DAC also and I agree: I think it has great potential and it already sounds very nice 'out of the box', although the first few hours it sounds awfull.
I want to get rid of the opamps and install my own discrete output stage with passive filter. The switched capacitor outputs of the AK4399 alow for a nice and simple output stage.

Thanks Sunsun22 for sharing your findings. Did you also consider to split analog and digital supply to the AK4113? It could improve PLL performance, but I don't know if it works in this case.
  Reply With Quote
Old 2nd April 2014, 12:59 PM   #17
diyAudio Member
 
Sunsun22's Avatar
 
Join Date: Jul 2004
Location: Hong Kong
I think this could bring some difference by spliting analog and digital supply for AK4113 but I don't have another Dexa 3.3 on hand. I will try to modify a 5V to 3.3V when I have time. In the meantime, I would like to try discrete opamp replacement from New Class D for this dual AK4399 too. Does anyone tried this discrete opamp replacement or similar ones from Burson?
  Reply With Quote
Old 3rd April 2014, 06:02 PM   #18
diyAudio Member
 
Join Date: Oct 2004
Hi

I use separate 6631 on my Dual ak4399 . This has been maybe asked thousand times on other forums but is there any advantage using integrated Xmos on dac pcb Maybe better than 6631a ?
  Reply With Quote
Old 3rd April 2014, 06:21 PM   #19
diyAudio Member
 
Join Date: Apr 2010
The xmos in the weiliang minishow is excellent, but I can't compare with cm6631.

Inviato dal mio SM-N9005 utilizzando Tapatalk
  Reply With Quote
Old 3rd April 2014, 06:27 PM   #20
diyAudio Member
 
Sunsun22's Avatar
 
Join Date: Jul 2004
Location: Hong Kong
Default Separating digital and analog regulator for AK4113

I modified a Dexa 5V to 3.3V tonight and installed it in the dual AK4399 DAC. It is no need to burn in the component because it is used. There are more details can be heard because the background is more quiet. The overall modification brings this DAC to more musical and is worthwhile to do so. I can't stop listening this evening and only find out it is already 2:30 in the morning.
Attached Images
File Type: jpg photo.JPG (157.4 KB, 551 views)
  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
Weiliang DAC9 with AK4399 risperdal Digital Source 306 23rd July 2014 11:16 PM
DAC AK4399 + XMOS on Ebay luckyluke198x Digital Source 28 16th April 2014 03:06 AM
AKM AK4399 DAC PCB+IC on Ebay KlipschKid Digital Line Level 79 8th January 2014 04:26 PM
AK4399 123dB 32Bit DAC wizard1238 Digital Line Level 10 12th September 2012 02:36 PM
EBAY 1541 DUAL DAC DISAPPOINTMENT batteryman Digital Source 11 31st July 2011 12:40 PM


New To Site? Need Help?

All times are GMT. The time now is 09:35 AM.


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