NONOS DAC with TDA1541A or AD1865N-K or something better - diyAudio
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Old 29th April 2009, 07:06 AM   #1
omainik is offline omainik  Austria
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Default NONOS DAC with TDA1541A or AD1865N-K or something better

Hello,

please give me Your opinion and help me to select the right DAC for my next project.

In the last 7 Years I have build some NOS DACs with TDA1543 and TDA1541A. I tried different kinds of I/V conversion, Jitter Reduction, Output Stages, power supplies etc.

My current favorite is a CDPRO2 with a Crystal from Guido Tent feeding through IIS four paralleled TDA1541A. passive I/V conversion with resistor and a step up transformer. Volume Control is done by varying the resistor value.

For my next project I wish a computer interface instead of CD. I like iTunes so I choose Airport Express for the interface to the Computer. This is a network device which outputs bit and sampling correct digital audio in 16/44 format. I will inject a clock signal into the Airport, take the SPDIFF signal and extract with CS841x the data line. BCK and WS will be generated on the DAC side. The output stage should remain basically the same.

Did someone compare the sound of TDA1541A versus AD1865N-K or other R2R DACs in passive I/V configuration? Or is there any better IC?

Did someone try paralleling them?

Audio note uses ad1865. Did someone compare an AN DAC with TDA1541 one?

Please give me your ideas and opinion about this design and DAC choice.

Best Regards,
Peter

PS: I added a picture of my CDP / DAC / preamp and active crossover
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Old 29th April 2009, 04:36 PM   #2
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Default Re: NONOS DAC with TDA1541A or AD1865N-K or something better

Quote:
Originally posted by omainik
For my next project I wish a computer interface instead of CD. I like iTunes so I choose Airport Express for the interface to the Computer. This is a network device which outputs bit and sampling correct digital audio in 16/44 format. I will inject a clock signal into the Airport, take the SPDIFF signal and extract with CS841x the data line. BCK and WS will be generated on the DAC side. The output stage should remain basically the same.
Maybe is better to use for computer interface PCM2707, USB/I2S chip, for conection to DAC. TDA1541 don't need glue logic, but AD1865 need shifter.

Quote:
Originally posted by omainik
Did someone compare the sound of TDA1541A versus AD1865N-K or other R2R DACs in passive I/V configuration? Or is there any better IC?

Did someone try paralleling them?
The same thread, check post1 and post2.
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Old 5th May 2009, 05:18 AM   #3
omainik is offline omainik  Austria
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Hi josiphal,

thank You for the pointed threads. The information about TDA, AD and PCM dacs is very usefull for me.

I like the sound of my current DAC, so I'll stay with the tda1541a.

Ciao
Peter
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Old 5th May 2009, 09:06 AM   #4
a4b is offline a4b  Czech Republic
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You go on http://www.lampizator.eu
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Old 11th May 2009, 01:46 PM   #5
omainik is offline omainik  Austria
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Hi a4b,

what a great site. thanks. Now that's the question. TDA1541 is in the authors opinion one of the best, but AN has a good DAC with AD1865 too.

I think for the next Project i will stay at tda1541.

Ciao
Peter
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Old 11th May 2009, 07:29 PM   #6
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Check this page.
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