DDDAC1543 MK2 Testimonies
Testimonies ............ A selection of positive responses !!
For Testimonies PICTURES click here
I have build a standalone audio player with your DDAC1543MK2.
If you are interested you can take a look at this link:
System assembled for testing purpose. Usb dac is on the right side:
My own Standalone Audio Player, version 2
erst mal ein großes Dankeschön und Lob für deine Web-Seite.
Einige Themen, wie NNFB-Endstufen, Aktiv- Konzepte ... beschäftigen mich
schon fast Jahrzehnte.
Aber nun zum DAC:
Ich habe mit dem USB-Bausatz einen DAC, ähnlich deinem ersten
Bauvorschlag in einem USB-Gehäuse aufgebaut (siehe Fotos).
Fast alles hat wunderbar geklappt, nur musste ich feststellen, dass der
PCM2707 die Buffer bei 8 DAC's schon braucht.
Wenn ich direkt betreibe, klingt es irgendwie nicht so "voll und dynamisch".
Einen Brumm habe ich noch, den ich mit einem einfache Übertrager aus dem
KFZ-Audio-Bereich vollkommen beseitigen kann.
Und nun kommt schon gleich die erste Frage?
Gibt es Optokoppler, mit denen man den I2S trennen kann, (bei TNT habe
ich gelesen, dass die alle zu langsam sind) oder kennst du hochwertige
Übertrager, die auch problemlos beschaffbar sind.
Die optische Trennung würde ich vorziehen, damit der versäuchte PC- Gnd
vom Analogteil abgehängt wird.
Und nun zum Klang:
Mit Meßwerten kann ich nicht aufwarten, aber dem DAC in meinem Onkyo
SR702 AV-Receiver optisch zugespielt ist er ganz klar überlegen.
Was soll ich sagen, man ist einfach näher dran !!!!
I was away for the weekend so I did not get to listen more........
But, back for a few days, YES your DAC sounds better each CD than what I was
I continue to listen and find new things in my music.....
Thank you again.
Hello again Doede,
Just thought I'd let you know that I've completed the build and everything worked first time. Very straightforward, even for me, who hasn't populated a circuit board in a very long time. Good to know I've not completely forgotten how to do it..
Well, what can I say? It's been on for about half an hour playing music so far. I have it wired up to a 12V battery and I've just played a selection of tracks through Foobar after it recognised the USB DAC straight away.
I am between houses at the moment and living in a flat, hence my turntable and all of my vinyl are in storage for the next 6 months, which was my reason for this project in the first place. Strangely, the AC97 sound from my shuttle PC sounded very good through my Musical Fidelity A3.2 Pre-Power amp combination and Mission M71i speakers (a bit of a mish-mash of equipment I know), there is some very strange synergy between the components as the combination already sounded better than most digial audio I have heard.
I was going to do an A-B comparison of the new DAC with the AC97 output, but within 2 songs it was clear that this was a waste of time as the differences were completely obvious. Much wider sound stage, better dynamics, really clean sounding. Instrument timbre like I'd never heard from a computer before, depth, involvement, detail.. All improved massively. I'm a compulsive song swapper, never playing anything to completion, especially when I have new kit to listen to, but not here. Every single song I have heard so far has demanded my undivided attention and made me sit all the way through, such is the level of involvement. It's truly breathtaking and I have to admit that it's way beyond anything I was expecting, especially considering that this is the DAC in its most basic form with no tweaks. I am astounded and extremely excited at the prospect of spending the rest of my weekend listening to MUSIC! It also has that quality that makes you want to play everything loud ;-) as there's just no fatigue inducing sounds in there.
WOW! That's all I can say! And it's not even 'burned in' yet. I guess that the initial enthusiasm will subside in the coming weeks and I'll start to find faults here and there, but the beauty of that is that when I do.. I just order the next stage of the DAC from you.. I'm so happy!
Thank you once again Doede, you have turned someone who has spent the last 15 years being very cynical towards digital audio into a total convert.
I have to get back to my music now.. I hear it calling.
All the best
My system centers on Maggie 1.6s.
I’ve been doing a lot of upgrading and exploring over the past 6 months, often
hearing signs really nice sound, but it was not until I replaced my Bel Canto
DAC-2 with the 24 chip DDDAC1543 MK2 that my system really opened up – as if
my system had all kinds of potential that was being held back at the very
source. The improvement in imaging was huge! Vocals and instruments took on a
special kind of leanness where they became well defined, with each note
occupying its own space, but without sounding lean or edgy.
There was also something present in
my other DACs (which also included the Benchmark), that was annoying the heck
out of me and was especially noticeable in vocals. I’m still not sure what was
causing this annoyance, be it RFI, smearing due to digital filters, IM
distortion, or one of the many other possible causes, but I’m happy to say
this annoyance disappeared immediately after installing the DDDAC1543!
A lot of exciting stuff has been
happening to computer based audio in the past few years, but the USB interface
has had its share of limitations. For example, I notice a lot of “pseudo”
USB DACs on the market that lack necessary advances like the I2S interface. Not
so with the USB version of the DDDAC1543, which contains the latest and greatest
advances and truly unleashes the many advantages my computer based audio has to
Many thanks to
A brief update that I do believe
the 24-chips are doing a better job than the 12-chips, especially in terms of
imaging/soundstage; good recordings sound AWESOME; much better than I ever
In listening to my collection,
there’s still something to be desired. Some of which I was attributing to
poor recordings got much better with DDDAC, but the 24-chips did not seem to
help out too much more here. Anyway, I have to wonder how much more I might be
able squeeze out of these poorer recordings, especially in terms of better
vocals, but this is another issue that certainly goes beyond all DACs of
The tonal balance seemed to shift a
little toward the lows with the 24-chips and I’m about to experiment with
.47uF Sonicap Teflon output capacitors to see how the tonal balance compares
to the current Multicap 1uF RTXs that I have installed. It’s always a
tradeoff for me here, with jazz seeming to benefit from enhanced highs but
other music, like that containing complex vocals, benefiting from slightly
klar, wollte Dir eigentlich schon längst geschrieben haben. Also: Dein DAC
ist einfach sensationell. Ja, ja, sensationell. Im Augenblick habe ich zwar
"nur" den 12er DAC dran, und der wird immer noch besser - obwohl er doch
schon eingebrannt ist ? Oder geht das mit den Verbesserungen so noch
Das, was mich am meisten fasziniert, sind die "Rechtecke". Die bringen eine
bisher unbekannte Päzision, Reinheit, Tiefe, Natürlichkeit ins gesamte
Klangbild, und zwar so, daß es mir schlichtweg den Atem verschlägt und ich
hier sitze - mit Tränen in den Augen vor Glück. Also wahrhaft richtig toll.
Wie Du hasse ich Superlative, aber vermutlich gehöre ich zu den Wenigen, die
in der Verstärkung und den Lautsprechern auch absolute Rechtecke wiedergeben
können... klingt jetzt nach Angabe vielleicht, ist aber so. Und Dein DAC
zeigt jetzt allen Komponenten, was Sache ist und wo es wirklich langgeht...
Also Dein Teil hat so gefehlt, wie das letzte Mosaik im Gesamtbild.
Das ganze klingt jetzt so toll und vor allem so natürlich, daß ich mir
gegenwärtig eigentlich kaum mehr eine Verbesserung vorstellen kann. Ja. Ja.
Ich kann es mir wirklich kaum vorstellen. Insofern bin ich natürlich
gespannt, was der 2. DAC - und später der 60er DAC denn dann noch so alles
bringen wird... Und danach dann USB...
P.S. Ich spare schon für die restlichen 36er DACs.
Hello Doede, hope you are well.
I have managed to get some sleep this week finally, although no thanks to your wonderful DAC ;-). I have spent the last two nights solidly listening to it and having no time for anything else. You know when you have got yourself a great new piece of hi-fi equipment when you find you can re-discover your entire music collection and hear things you never heard before. I'm amazed that even though the first part of the DAC sounded excellent and I was beginning to have my doubts about how much better the next stage would be, those doubts have been well and truly quashed and now I see where the shortcomings of the built in DAC were. The music now seems to breath. There is so much more richness to voices. It's very natural and flows along beautifully. It also has, what I call the "LP12 groove". I owned a Linn LP12 many years ago and I found that the timing of that deck and its ability to get your feet tapping was far beyond any other piece of hi-fi equipment I ever owned. But this DAC has that quality and I find that truly amazing. It really does say to you, "Forget the sound, just listen to the music", and that's what I've been doing for the last couple of nights.
I do have one slight concern though. When I put the board together, I followed the component names on the board. I had the circuit diagram there for reference but I have to admit that I was not taking too much notice of it as the board was very clearly laid out. Which means that I had a few components spare at the end namely the output caps and 100K resistors... Which for the last 2 nights have not been used at all. Would I be right in saying that is why the output is a lot lower than it was with the built in DAC? The only problem I have at the moment is that I am still using naked circuit boards and the interconnects to the amp are soldered directly to the output from the board. I am hoping to source a case to put it all into this weekend where I will be able to mount the output caps and resistors, but my question is... Is it safe in the meantime and what am I losing out on without those components in place?
Once again I cannot thank you enough. I am looking forward to a very relaxing weekend of non-stop music. I also have my friends asking about it, so don't be surprised if there are more orders for DACs from me (as I will inevitably have to build them) in the near future ;-).
All the best
Well, yesterday I built the DAC and paired it with one of the T-amps. I configured XP for USB output. And...it blows my mind! Beyond excellent! Incredible! And I didn't calibrate voltages or anything yet!
But after a minute it overheated and stopped. I built the chip tower without the two side heatsinks. Surprising how hot it becomes! But today I will finish it properly and look for some Mundorf capacitors too.
So, thanks for your great design! I feel like my system now sounds as good as anything I have heard in the $10,000 stereo store in San Francisco. (Except for their $100,000 reference system, but I believe the price may be too high.) Probably next month I will add a slave module, just for the fun of it.
Keep up the good work!
Hey, just wanted to say some more about the DAC, now that I have run it for a few days.
Initially I used a junk PC power supply for it and my T-amp. Now I have a battery. I got a UPS on ebay for $20, so that's a 12V 7AH battery and charge system for cheap. The sound quality is better. The PC supply had some noise from the fan or something, but of course the battery is perfect. I'm not sure it needs any input capacitors.
When I checked calibration voltages on the board, they were all in the middle of the range already. Is there a precise value that they should be? Would things sound better if I calibrated more exactly?
Configuration of XP and Foobar for the USB is interesting. I set the driver to "use audio features" and "map through this device." It doesn't seem to work without "use audio features," and I use "map" because I like to hear PC audio too... I don't think XP changes the data between Foobar and the DAC, so music quality is not affected...or?
In general, I'm just 100% happy with the sound, and your design is classic. Use cheap parts to produce better signal quality than one expensive part, what a good idea!
The DA works absolutely great !!!!! J I had to make several tests with my « standard » capacitors at the output stage. Finally I am at a nice level, much better than the analogue out of my DVD.
installed the Mundorf silver-oil caps on Monday. Amazing change! The sound moved back some meters through my wall!
How did you determine the .47uF value?
This is my first (and only) outboard DAC. But I found a StereoLink 1200 for $20 and compared it. With the normal caps, the two DACs sounded similar (of course, I'm using Anthony Gallo Nucleus Micro sat/sub speakers, not too bad but probably not capable of revealing small important differences) but of course the Mundorfs made it obvious...and when I build new full-range speakers, I am sure I will hear even more.
PC USB audio must become the standard method. No transport errors, instant queue and seek, USB noise insulation...why use CD players at all? I will play only .ape format now, and use a wifi PDA to control the server in another room...only speakers and small DAC/amp in the listening room.
Thanks for the great Mundorf tip. I should probably order more kits to build for friends, when they hear my little system!
Habe mit dem langen Wochenende meinen DAC jetzt fertig gestellt. Hatte Probleme mit einem Modul sobald es angeschlossen wurde hatte ich einen deutlich hörbares Rauschen. Das komische war das man keine Verzerrungen hörte. Also habe ich Stück für Stück die Bauteile gewechselt und als das alles nicht zum Ziel führte blieb nur der Turm über. Habe dann ein IC nach dem anderen abgelötet und siehe da nach dem 7. IC war Ruhe. Bin dann schnell nach Zilles gefahren und habe mir 12 neue TDA's gekauft und den Turm komplett neu aufgebaut auf Anhieb alles korrekt. Hast du schon mal einen solchen Fehler eines IC's gehabt? Bin dann heute zu meinem Hifi Freund gefahren der sich mittlerweile die Martin Logan Summit an seine Anlage gehängt hat. Außerdem hat er sich den Jadis DAC JS1 MKIII den er günstig für 9500,-€ erwerben konnte zugelegt "er gönnt sich ja sonst nichts"! Was soll ich sagen wir konnten nach mehrstündiger Session keinen Sieger besser gesagt keinen signifikanten Unterschied zwischen den DA-Wandlern feststellen und meiner ist ja nicht mal eingearbeitet. Das ist ein super Sonntag ich bin stolz auf mich und deinen Bausatz. Nachteil des Sonntags ich hätte jetzt auch gerne die Summit, vielleicht überfalle ich ne Bank? Aber mein Freund hatt natürlich etwas zu nörgeln es war schon etwas aufwendig die gleiche Lautstärke zu bekommen mein DAC hat eine geringere Ausgangsspannung und er meinte eventuell hätte es am dauernden einregeln gelegen das sein Jadis "Superteil" nicht besser abschnitt. Ich möchte diese letzte "Unsicherheit" von seiner Seite wegnehmen und meine Frage an dich wie bekomme ich ohne Klangeinbuße einen höheren Ausgangspegel hin. Hast du hierfür etwas im Programm oder einen guten Tip? Mit freundlichen Grüssen der fröhliche Hörer aus den Niederlanden Guido
Hello Doede, after a couple of assembly weeks now I'm a satisfied buyer of your "DDDAC 1543 MK2" kit. Performance are so high, compared to the usual sound quality of my equipment! I have posted my experiences with your kit here:
This is still a "work in progress" but, if you are interested, you can use freely my link in your website as an example of customer satisfaction :-) Very soon I will ordered a 4 dac towers kit. Ciao,
Happy Listening and Building !!!!
IMPORTANT: The information provided on this page is intended as guide for DIY activities and therefore free to copy and or publish. If any one wishes to use any of the information from my WEB site, please make sure to refer and footnote to my URL Link as source! Doede Douma