A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input) - Page 83 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, 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
Thread Tools Search this Thread
Old 30th December 2013, 07:40 AM   #821
SimonJ is offline SimonJ  United Kingdom
diyAudio Member
Join Date: Mar 2013
Location: Southampton
How did the listening sessions go with your friends Doede? Will be interested to see your. Ew circuits and how you used the 244 IC as that is a simple and great idea for signal switching
  Reply With Quote
Old 30th December 2013, 09:15 AM   #822
rfthon is offline rfthon  Netherlands
diyAudio Member
Join Date: Dec 2013
Default dddac 1794

The pictures shows my project 'the DDDac 1794'
I have started with one converter deck and expanded with decks till I reached the top plate of the housing. :-)
The drilling and engraving is done by company Schaeffer in Germany and is very precise made by computer controlled cnc, Schaeffer also delivers the software for Mac and Windows to design the lay-out.
Nice software and easy to use.
Costs for the front-panel 51 euro and back-panel 45 euro, this price is without material and transport-costs.
I have the casing from an Italian company Hi-Fi 2000 which costed 120 euro (Modu 1NSLA02280B).

I use cinch chassis connectors from Cardas because I also use Cardas cinch cable.(perfectly fit between cinch plug and cinch chassis part)
Neutrik XLR and 75 ohm cinch connector from WBT.
This WBT connector is for the SPDIF input.

The sound of the dac 1794 is very relaxed and remind me of the 'analog days' when I used a Linn LP12 with SME IV arm.
It is relaxed but also very detailed.
The HiRez recordings can sound better and I say 'can' because many times it doesn't sound better.
An average recording in HiRez sounds not as good as a high quality recording on cd format.
Listen to Domnérus Antiphone Blues on Lim records and you'll notice how good cd can be.
On the other hand listen to a very good HiRez recording of label L2 “The view was all in lines” or “Remote Galaxy” and you will experience the quality of HiRez.
How does this dac 1794 deliver itself against the competition.
I have listen to a minerva dac (Weiss) which sounds to my ears nervous.
I think the dddac 1794 is two steps ahead of the Weiss dac.
I own a LessLoss dac, a very good dac using batteries for the Analog part and transformer for the Digital part.
What I loved from the LessLoss dac was the bass response I don't know if it was the Batteries or simple analog stage which made the bass response as good as it was.
But now I have to say, the ddac 1794 is better in all parts of the music spectrum.
From the lowest to the highest note, more space around the instruments,more definition,cleaner highs Yes I'm talking about cd format.
Good HiRez recording are the icing on the cake, more definition,dynamics and natural sound.
Attached Images
File Type: jpg _MG_8588.jpg (502.5 KB, 762 views)
File Type: jpg _MG_8581.jpg (582.6 KB, 716 views)
File Type: jpg _MG_8528.jpg (644.8 KB, 668 views)
File Type: jpg _MG_8563.jpg (754.0 KB, 633 views)
File Type: jpg _MG_8585.jpg (613.1 KB, 588 views)
  Reply With Quote
Old 30th December 2013, 10:19 AM   #823
diyAudio Member
Join Date: Jan 2005
Location: a littlee town in western denmark
What are you using for output....trafo or caps ?
great works this casing for dac---
  Reply With Quote
Old 30th December 2013, 11:11 AM   #824
rfthon is offline rfthon  Netherlands
diyAudio Member
Join Date: Dec 2013
Hello beardman,

First I was using Mundorf caps, the very known gold ,silver and oil type.
Later on I tried the Cinemag trafo.
There is a certain difference in sound.
The Mundorf has a little more push in the high frequencies the Cinemag sounds a little more rounded.The main reason I use the Cinemag is because of the isolation(galvanic).
Noise (digital?) is better isolated.
  Reply With Quote
Old 31st December 2013, 01:02 AM   #825
Chanh is offline Chanh  Australia
diyAudio Member
Join Date: Oct 2013
Location: Perth Western Australia
Originally Posted by SimonJ View Post
How did the listening sessions go with your friends Doede?
+1 here.
  Reply With Quote
Old 31st December 2013, 06:33 AM   #826
WalterW is offline WalterW  Netherlands
diyAudio Member
Join Date: Oct 2012
Location: Utrecht
rfthon, very nice! Great case. Nice gold connectors at the back

What is it, you taped inside your housing, the black stuff? EMI related?

I see you didn't like the ugly wirewounds in the PSU too I let them in cause some inductance isn't a bad thing at that place in the PSU, but....

Pass F5, F5Tv3, ACA, Aleph J, DDDAC1794, DCB1, BA3-preamp, VFET CSX1, Pass F6
  Reply With Quote
Old 31st December 2013, 07:07 AM   #827
rfthon is offline rfthon  Netherlands
diyAudio Member
Join Date: Dec 2013
Hello Walter,

The black panels inside the housing is from Soundcoat (partsconnexion).
It is just only against vibration.
I know the wirewound resistors from loudspeaker building, couldn't resist to replace them by Mills ;-]
  Reply With Quote
Old 31st December 2013, 08:14 AM   #828
dddac is offline dddac  Germany
diyAudio Member
Join Date: Jul 2003
Location: Wiesbaden
Originally Posted by Chanh View Post
+1 here.

OK, Pics first (or it did not happen )

Set up was the 8 Decks Version of the DDDAC1794S with Silver Plus USB Cable, WaveIO with 2.15 and 1.65 Version Drivers. CD Player Klaus his high end Sony 777. Notebook WIN8.1 with JRiver19 and Foobar and Mac Mini with Audirvana. 8TB NAS box with Music. Also the Sotwer TVC Versions. To compare my original 4 DECK DAC with "normal" Sowter output

and Klaus his fantastic GOTO System
Attached Images
File Type: jpg DSC_0299.JPG (291.8 KB, 290 views)
File Type: jpg DSC_0281.JPG (388.3 KB, 231 views)
File Type: jpg DSC_0282.JPG (313.1 KB, 265 views)
File Type: jpg DSC_0280.JPG (322.2 KB, 259 views)
Happy listening and building

Last edited by dddac; 31st December 2013 at 08:17 AM.
  Reply With Quote
Old 31st December 2013, 08:32 AM   #829
dddac is offline dddac  Germany
diyAudio Member
Join Date: Jul 2003
Location: Wiesbaden
Default TEST-day DDDAC1794S

Goal was to just test through the new DAC and try some things with players, cables etc. But most of all, testing the new DAC on USB and SPDIF
This is in summary what came out:
8 Decks version works 100%. Sound is very fluid and analogue, especially on low volume. Lots of detail and very solid and contoured bass.
SPDIF versus USB. USB rules… Spdif is just behind in clarity and spatial sound stage. USB has bit more texture in voices. Spdif you could say is more rounded, les hearing through. (Still clearly better than stand-alone CD player with its own analog output)
Sowter versus Capacitor output. More space, more fluid without losing high presence (not so rounded like Cinemag 15B) As Tuyen write: you hear deeper in the music. Background is extremely quiet.
USB Cables, Less pronounce. Both Silver plus and Klaus his Kimber Cable play very neutral and open. Basic cable loses a bit detail. BUT not as big a difference between transformers and capacitors…
Music players: Foobar has been catching up. Difference is almost nothing left over (or is it WIN 8.1?) MAC is just bit more open. Could not really tell difference with JRiver (but it plays FLAC …)
8 deck versus 4 decks. Clear improvement in low level bass. More rich details and micro level detail. Is it worth the 4 extra Decks? If no budget constraints? Big yes. Can you live without? Of course (But Reinhard for sure not, haha)
By the way, on Feb 15 we have a new session for the DACs with Jean Hiraga, who owns now a 120 chip version of my older 1543 dac. He also wants the new 1794S 8 deck DAC, so we do some shoot out day again. Questions for 16 Decks are already coming in. Would be nice to try ;-)
What else…. Lots of music! We sometime totally forget to watch for sound differences and were just drifting away on the music. That is our aim anyway, isn’t it?
Happy listening and building
  Reply With Quote
Old 31st December 2013, 09:01 AM   #830
diyAudio Member
Join Date: Dec 2013
Location: Maidstone
Hi all, I'm totally new here and plan to start the DDDAC build fairly soon.
I have read about a third of this monster thread but as most of it is over my head I have only been able to pick out some nuggets of wisdom.
I may have some questions a long the way.


  Reply With Quote


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
FS: Audio Widget (modified) Async USB DAC 24/192 ESS 9023 headphone friendly ASIO KS 2A3SET Swap Meet 5 15th August 2012 04:52 AM
Show my PCM1794 DAC TSOLINK + COAX + USB input, Line and headphone AMP output AWaudio Vendor's Bazaar 3 2nd January 2012 12:44 PM
GodDAC - 192/24 USB DAC BizonGod Digital Source 36 30th June 2011 03:16 PM
24 bit/192 kHz via USB? gentlevoice Everything Else 3 22nd December 2008 06:24 AM

New To Site? Need Help?

All times are GMT. The time now is 04:02 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2