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Mini Dac TDA1543 X 4 NOS - Page 7

post #91 of 950

I do really appreciate your opinion SPwild :-)

 

found some more info on the metrum NOS http://www.hifi.nl/recensies/4265/Metrum-Acoustics-NOS-Mini-DACs.html

 

google translate a must...


Edited by ardilla - 1/4/11 at 5:19am
post #92 of 950

Damn! My Muse just malfunctioned :-( Heavy super jitter on the optical, coax completely dead. Worked perfect last night - today not. What can have happend - overheating by beeing plugged in???? Cables are ok (checked) Just as I was getting ready to sell my expensive super duper dac...

post #93 of 950
Quote:
Originally Posted by ardilla View Post

 Heavy super jitter on the optical, coax completely dead.


I'm curious. How do you define the 'heavy super jitter'? How does it 'sound'?

post #94 of 950
Thread Starter 
Quote:
Originally Posted by ardilla View Post

Damn! My Muse just malfunctioned :-( Heavy super jitter on the optical, coax completely dead. Worked perfect last night - today not. What can have happend - overheating by beeing plugged in???? Cables are ok (checked) Just as I was getting ready to sell my expensive super duper dac...

 

Try to put the switch on coax before powering up.  I have the problem sometimes when I have it on with optical and switch to coax, it does not capture signal.  But powering on when the switch is on coax will work.  This problem seems to be PSU related...it happens all the time with car battery and less so with supplied wallwart.  I'll measure the voltage on wallwart to see what is happening.

 

Hey this Dutch dac is very mysterious.  It is definitely a NOS using R2R dac chips, but they say the dac chip is not a typical audio dac, it is a mysterious industrial dac that goes to 7mhz sample rate!?!?!?.  Interesting indeed, but there is little information.  The pictures are very small, but it has much better power regulation than the Muse mini dac by a lot - internal is very high quality, more than Muse.  You should keep an eye out for this unique dac.

 

Edit:  Hey, try the warranty with ebay seller as it is very new still...I do not use mine much because I have the Reference 7, but I will now test for durability.  Lucky this DAC was only 60 dollars so minimal loss in worse case scenario.  I will commence stress test and see what happens.  Maybe try open it up and apply pressure to DIR9001 and see if it works with pressure on chip, maybe poor solder join.  I feel ashamed to recommend such an unreliable product of it did fault so soon.


Edited by SP Wild - 1/4/11 at 5:58am
post #95 of 950

Like super heavy many scratches in a vinyl, of course

Quote:
Originally Posted by Lil' Knight View Post
Quote:
Originally Posted by ardilla View Post

 Heavy super jitter on the optical, coax completely dead.


I'm curious. How do you define the 'heavy super jitter'? How does it 'sound'?

post #96 of 950


Thanks SP. I'll try that - and also contact the ebay seller. Looking forward to your test-report. Too bad - because this dac is a bargain. It made my T1 listenable! - I was considering getting rid of it.. I'm starting to want that little dutch dac, now - seems like good build quality (which I somehow nw appreciate more...)

 

BTW what is the "SP" in your avatar?

 

 

Quote:
Originally Posted by SP Wild View Post



Quote:
Originally Posted by ardilla View Post

Damn! My Muse just malfunctioned :-( Heavy super jitter on the optical, coax completely dead. Worked perfect last night - today not. What can have happend - overheating by beeing plugged in???? Cables are ok (checked) Just as I was getting ready to sell my expensive super duper dac...

 

Try to put the switch on coax before powering up.  I have the problem sometimes when I have it on with optical and switch to coax, it does not capture signal.  But powering on when the switch is on coax will work.  This problem seems to be PSU related...it happens all the time with car battery and less so with supplied wallwart.  I'll measure the voltage on wallwart to see what is happening.

 

Hey this Dutch dac is very mysterious.  It is definitely a NOS using R2R dac chips, but they say the dac chip is not a typical audio dac, it is a mysterious industrial dac that goes to 7mhz sample rate!?!?!?.  Interesting indeed, but there is little information.  The pictures are very small, but it has much better power regulation than the Muse mini dac by a lot - internal is very high quality, more than Muse.  You should keep an eye out for this unique dac.

 

Edit:  Hey, try the warranty with ebay seller as it is very new still...I do not use mine much because I have the Reference 7, but I will now test for durability.  Lucky this DAC was only 60 dollars so minimal loss in worse case scenario.  I will commence stress test and see what happens.  Maybe try open it up and apply pressure to DIR9001 and see if it works with pressure on chip, maybe poor solder join.  I feel ashamed to recommend such an unreliable product of it did fault so soon.

post #97 of 950

Tried power off and switching the switch - now it works again!!!! on spdif at and toslink.....

 

EDIT: But after playing around with the switch, it doesn't work

post #98 of 950
Thread Starter 
Quote:
Originally Posted by ardilla View Post


Thanks SP. I'll try that - and also contact the ebay seller. Looking forward to your test-report. Too bad - because this dac is a bargain. It made my T1 listenable! - I was considering getting rid of it.. I'm starting to want that little dutch dac, now - seems like good build quality (which I somehow nw appreciate more...)

 

BTW what is the "SP" in your avatar?

 

 

Quote:
Originally Posted by SP Wild View Post



Quote:
Originally Posted by ardilla View Post

Damn! My Muse just malfunctioned :-( Heavy super jitter on the optical, coax completely dead. Worked perfect last night - today not. What can have happend - overheating by beeing plugged in???? Cables are ok (checked) Just as I was getting ready to sell my expensive super duper dac...

 

Try to put the switch on coax before powering up.  I have the problem sometimes when I have it on with optical and switch to coax, it does not capture signal.  But powering on when the switch is on coax will work.  This problem seems to be PSU related...it happens all the time with car battery and less so with supplied wallwart.  I'll measure the voltage on wallwart to see what is happening.

 

Hey this Dutch dac is very mysterious.  It is definitely a NOS using R2R dac chips, but they say the dac chip is not a typical audio dac, it is a mysterious industrial dac that goes to 7mhz sample rate!?!?!?.  Interesting indeed, but there is little information.  The pictures are very small, but it has much better power regulation than the Muse mini dac by a lot - internal is very high quality, more than Muse.  You should keep an eye out for this unique dac.

 

Edit:  Hey, try the warranty with ebay seller as it is very new still...I do not use mine much because I have the Reference 7, but I will now test for durability.  Lucky this DAC was only 60 dollars so minimal loss in worse case scenario.  I will commence stress test and see what happens.  Maybe try open it up and apply pressure to DIR9001 and see if it works with pressure on chip, maybe poor solder join.  I feel ashamed to recommend such an unreliable product of it did fault so soon.


Hey, I suspect it may well be a heat issue if you have left it on for a very, very longtime.  Try to leave it to cool down and see what happens (but I think you said you just turned it on when it was cold).  OK I will leave my one on for a very long time.  I think heat because this is the smallest DAC ever to house 4 TDA1543 chips and I read that they distort heavily when overheated.  I hope I can make this faulty and find what is cause and if I can fix it myself.  The sound quality far beyond its price...too bad the build quality is the same as its price...cheap!

 

"SP" stands for "Super Predator"...the picture is a Jaguar, because it is truly alpha in its domain, unlike a Lion which is afraid of elephants and rhinoceros.  I know, it was a stupid idea, but I never meant to join for so long...just to ask one question!

 

EDIT:  So it can be saved!  Try to unplug to turn off if you want to change to different input and then turn back on.  I noticed this with my one, but I was OK with that little quirk.  Basically do not touch switch when power is on, only when off.


Edited by SP Wild - 1/4/11 at 6:58am
post #99 of 950

Seems likely to be a heat AND switch issue..  Left it on overnight - then the problem started. Now it's warm and the switch dont work It's stuck at toslink - but plays music clear and loud. I'll try it out some more and report to the Super DAC Predator ;-) 

 

PS - Like your new signature:-) I never figured out how to make one....


Edited by ardilla - 1/4/11 at 7:37am
post #100 of 950
Thread Starter 

redface.gif

 

OK, I'm going to  leave it on with the optical locked onto my CD transport...I'm going to leave it on for a 100 hours and see what happens.


Edited by SP Wild - 1/4/11 at 7:43am
post #101 of 950

great.

 

We might end up drilling  a bunch of holes in it? I see that some of the newer Valab Dacs have holes while the older do not..

 

BTW - I also had to restart my (digitally controlled) water boiler today. Wouldn't work until I unplugged it 5 minutes. Seems like it's such a a day..... <<


Edited by ardilla - 1/4/11 at 1:18pm
post #102 of 950


Sounds more like noise to me. Great to see a new definition of jitter.

Quote:
Originally Posted by ardilla View Post

Like super heavy many scratches in a vinyl, of course

Quote:
Originally Posted by Lil' Knight View Post
Quote:
Originally Posted by ardilla View Post

 Heavy super jitter on the optical, coax completely dead.


I'm curious. How do you define the 'heavy super jitter'? How does it 'sound'?


 
post #103 of 950

Lil' Knight! Are you as grumpy  as your avatar-picture suggests?

 

Here is a definition: Jitter is the deviation in or displacement of some aspect of the pulses in a high-frequency digital signal http://en.wikipedia.org/wiki/Jitter

 

Heavy super jitter is the heavy super deviation in or displacement of some heavy super aspect of the pulses in a heavy super total digital signal. 

 

I'm no expert, but I know a heavy super jitter when I hear one :-9


Edited by ardilla - 1/5/11 at 3:02am
post #104 of 950

Back to the MUSE mini NOS dac

 

Heat seems to be the clue. When the unit is cold - both the dac and switch seems to function... at least right now :-)

post #105 of 950
Quote:
Originally Posted by ardilla View Post

I do really appreciate your opinion SPwild :-)

 

found some more info on the metrum NOS http://www.hifi.nl/recensies/4265/Metrum-Acoustics-NOS-Mini-DACs.html

 

google translate a must...


Wow... looks very interresting... the misterious DAC chip is really make me curious... from one bigger picture I count the DAC chip has 16 legs... hmmm what kind if chip do they use.. BUT wait... they only mention NOS and not R2R... hmmm maybe they use Delta-Sigma chip but just without digital filtering?

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