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Old 9th November 2003, 01:52 AM   #1
TJ is offline TJ
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Default diff or parallel dac

which one sound better ? why ? thank
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Old 9th November 2003, 10:38 AM   #2
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Hi
In both cases the sound is worse, in comparison with sole DAC, because there are no two completely identical DACs, everyone always have some disorder of parameters (in a case with R-2R).
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Old 9th November 2003, 11:17 AM   #3
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Dear ,

how about the dac tower in the DDDAC in which there are 8 dac's more or less as in fig2?

DAC parameters might be of but you gain resolution....
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Old 9th November 2003, 11:23 AM   #4
Bricolo is offline Bricolo  France
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Quote:
Originally posted by
Hi
In both cases the sound is worse, in comparison with sole DAC, because there are no two completely identical DACs, everyone always have some disorder of parameters (in a case with R-2R).

I would have said the opposite.
You're right on the fact that the DACs aren't 100% identical. But since theyr "drift", "distortion" or whatever you call it, is a kind of random error, placing multiple dacs will tend to cancel this, and will give you an output that is the mean value of all the dac's output. And this value will logically be closer to the real value you should get
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Old 9th November 2003, 12:03 PM   #5
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Dear ALL.
Subjectively, the parallel or differential connection R-2R give sounds worse for me. The HF are greased, but the sound is much better in single DAC connection.
DDAC uses passive i/u, and the parallel connection dac ICs there is simply necessary for increase of a output current.
BTW, TDA1543 is the rather poor chip, can be therefore degradation of a sound is not audible What have you found such good in these TDAs? Its single advantage is simplicity in use.

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But since theyr "drift", "distortion" or whatever you call it, is a kind of random error, placing multiple dacs will tend to cancel this, and will give you an output that is the mean value of all the dac's output. And this value will logically be closer to the real value you should get
Only in a paper. Listen and you`ll see
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Old 9th November 2003, 04:15 PM   #6
Pedja is offline Pedja  Serbia
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Hi ,

Quote:
DDAC uses passive i/u, and the parallel connection dac ICs there is simply necessary for increase of a output current.
Increased output current is not needed, whatever is the way the I/V conversion is done.

Quote:
BTW, TDA1543 is the rather poor chip, can be therefore degradation of a sound is not audible What have you found such good in these TDAs? Its single advantage is simplicity in use.
The only shortcoming with TDA1543 is that you cant easily explain that, using it, you dont, even remotely, use poor chip.

Pedja
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Old 10th November 2003, 12:14 PM   #7
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Default Re: diff or parallel dac

Quote:
Originally posted by TJ
which one sound better ? why ? thank
As demonstrated by the disagreement over the merits of the TDA1543 and the condemnation of the two configurations,an objective view is not possible. I suggest you build each configuration and decide for yourself.
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