USB DAC Selection - 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 20th January 2007, 08:30 AM   #1
leggi is offline leggi  Australia
diyAudio Member
 
Join Date: Jan 2007
Send a message via MSN to leggi
Default USB DAC Selection

Hi all! As a first time poster I would just like to say I have done moderate amounts of soldering with decent skill. I have some electronics knowledge, currently researching/reading material to gain more. As for audio based electronics I am not very experienced, I am considering some low cost projects to get my skills up to scratch. This project will be a skill builder in aim of the USB DAC I am searching for below!

I have been researching USB DAC's for a bit over a week now and have believe I have a fair understanding of the principles behind them, however I do have some questions.

I am constructing this post as I am having trouble refining my search to a good quality DIY build for no more than 3-400.

I am after something simple, I have no use for digital inputs/outputs or analogue for that matter bar RCA L+R. I assume less inputs / outputs will mean more money to spend on other components

What I am after

Input/Output:
+ USB
+ Power
- RCA L+R

- 2 Channel ()
- Non Upsampling (done on PC)
- Non Oversampling (Better quality I have read)
- Separate USB transport and DAC. Connected via I2S (Better quality no translation)
- Ability to process upsampled computer source 24/96
- Would prefer mains power for constant usage as the unit will not be leaving my PC

Any suggestions on some models to have a poke at would be great.

The DDDAC1543 with USB module looks good, but I canít seem to find any user impressions of the quality.

I am finding it hard to get a direct comparison of any units or individuals for that matter. Even a nudge in the right direction would be a great help. Thanks!
  Reply With Quote
Old 20th January 2007, 08:40 PM   #2
diyAudio Member
 
soundcheck's Avatar
 
Join Date: Mar 2005
Location: D
Default Re: USB DAC Selection

Quote:
Originally posted by leggi


The DDDAC1543 with USB module looks good, but I canít seem to find any user impressions of the quality.

I am finding it hard to get a direct comparison of any units or individuals for that matter. Even a nudge in the right direction would be a great help. Thanks!
Hi there.

I am running a modded DDDAC1543 with 24DACs and battery supply.
If you want to go for a 16bit DAC I can strongly recommend this DAC.
The Tent-clock upgrade I'd consider a must and get yourself decent
coupling caps. Though I've thrown out my coupling caps, since I connect
the DAC directly to the AMP ( I am running a modded Charlize module).
Now I got a spare pair of 100$ Mundorf Caps.

You'll be happy with this DAC. Sound, soundstage, dynamics and transients
are really great. I love this DAC. I am running the DAC over USB. This just works great.
If you find the right PC setup, which is not that easy, you'll have a hard time to find any CDP out there able to beat this little thingy.

Be careful with DACs, where USB is converted the SPDIF. You'll be catching
more jitter.

Cheers
  Reply With Quote
Old 22nd January 2007, 08:01 AM   #3
simcap is offline simcap  Italy
diyAudio Member
 
Join Date: Jan 2007
Location: Brixia, Italy
Hello,

DDAC1543MK2 is in my audio system from a year now, and i'm very happy with it. :-)
I have builded also a standalone audio player based on it.

At the following links I've posted my impressions:
http://www.simonecapretti.eu/Audio/D...DAC1543MK2.htm

and here there is the standalone audio player:
http://www.simonecapretti.eu/Audio/MoSAP2/MoSAP2.htm

Ciao!

Simone.
  Reply With Quote
Old 22nd January 2007, 08:39 AM   #4
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Hi Soundcheck

"Be careful with DACs, where USB is converted the SPDIF. You'll be catching
more jitter."

Please explain this.

Thanks.

Michael
  Reply With Quote
Old 22nd January 2007, 09:05 AM   #5
ssmith is offline ssmith  France
diyAudio Member
 
Join Date: Aug 2005
Location: Paris
Another very happy DDDac user here -- 2 DAC boards (2x 12 chips) and the USB board. Unlike soundcheck, I don't have the tentlabs clock on the USB board yet (they are still out of stock), but can't wait to get it.
Even without this, I'm 100% happy with it. It has replaced my Benchmark DAC1, which I was feeding from the PC with SPDIF. It may have been this inferior interface that was making the DAC1 sound a bit grating, but to my ears the DDDac is more enjoyable and loses nothing when it comes to detail.

Simone -- thanks for your site -- it was a big help for me wiring up my DAC and playing with various PSU's.

Leggi -- do a search for DDDac here and on google and you'll find some impressions. Mostly very good, although others argue that NOS dacs and 1543 chips in general are 'junk'.
  Reply With Quote
Old 22nd January 2007, 09:12 AM   #6
diyAudio Member
 
soundcheck's Avatar
 
Join Date: Mar 2005
Location: D
Quote:
Originally posted by dublin78
Hi Soundcheck

"Be careful with DACs, where USB is converted the SPDIF. You'll be catching
more jitter."

Please explain this.

Thanks.

Michael
I think a guy called John Svensson at audiocircle or AA took some measurements. He measured double the jitter, if I recall it right. The jitter on each single interface was pretty much the same. When cascaded it doubled.
That might not be the case, if you do a proper reclocking in front of the DAC

I don't have the link at hand anymore. Just google it.

Cheers
  Reply With Quote
Old 22nd January 2007, 09:26 AM   #7
diyAudio Member
 
soundcheck's Avatar
 
Join Date: Mar 2005
Location: D
Quote:
Originally posted by ssmith
Although others argue that NOS dacs and 1543 chips in general are 'junk'.

I think that's pretty much what Doede experienced and measured, before he applied his biasing setup and DAC-stacking.

However - I'd love to get a similar, but 24bit, DAC with just a resistor I/V output stage.
Perhaps one day BurrBrown also comes up with a 24bit USB2I2S interface chip.

Cheers
  Reply With Quote
Old 31st January 2007, 08:43 AM   #8
leggi is offline leggi  Australia
diyAudio Member
 
Join Date: Jan 2007
Send a message via MSN to leggi
Quote:
Originally posted by soundcheck



I think that's pretty much what Doede experienced and measured, before he applied his biasing setup and DAC-stacking.

However - I'd love to get a similar, but 24bit, DAC with just a resistor I/V output stage.
Perhaps one day BurrBrown also comes up with a 24bit USB2I2S interface chip.

Cheers
Is there any way I can build a setup with 24bit output? I was thinking that upsapling to 24bit on the PC would produce better sound...

Sorry for the late reply, I have been out of town.
  Reply With Quote
Old 31st January 2007, 09:59 AM   #9
diyAudio Member
 
soundcheck's Avatar
 
Join Date: Mar 2005
Location: D
Just FYI, talking a bit about 1543 perfomance potential with a single chip.

http://www.enjoythemusic.com/magazin...mpling_dac.htm

Have a look what Charles Altmann squeezed out of a single
1543 DAC. (over SPDIF)

Altmans homepage is a quite interesting read too!

Cheers
  Reply With Quote
Old 31st January 2007, 10:09 AM   #10
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Simcap
I like your system very much - well done.
Newbie question: Please can you explain the function and advantages of the two capacitors connected to the analogue outputs?
I am about to build a similar sytem, but with a cdp transport, a NOS DAC, and a charlize amp with pot, all in one housing. I may add a USB input as well, but probably not at this time, as this will be a secondary system.
I am pleased that you had success with your "off the shelf" power supply. I had decided to use this method also, although I was not planning on spending as much. I was going to choose a TFT monitor supply 12v DC 5A @ about £20 (switched and regulated)
Best wishes.
Michael
  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
Pre amp selection? kanifee Chip Amps 5 27th August 2008 01:11 PM
OP AMP Selection JBL Man Chip Amps 1 16th May 2008 06:42 AM
amp selection spicer81 Car Audio 20 23rd February 2008 03:04 PM
Help with selection? Dougie085 Chip Amps 0 26th April 2006 07:27 AM
Amp Selection Donaldo Car Audio 4 25th November 2004 04:59 PM


New To Site? Need Help?

All times are GMT. The time now is 10:12 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