Planning to modify a DDDAC USB TDA1543 DAC board with tube outputs - diyAudio
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Old 13th May 2008, 12:33 AM   #1
wa2ise is offline wa2ise  United States
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Default Planning to modify a DDDAC USB TDA1543 DAC board with tube outputs

I ordered a USB DAC board from http://www.dddac.de/ma_dac31.htm
Namely the http://www.dddac.de/files/dddac-usb-1543-dac32.pdf
with the TDA1543 DAC chip on it. And I plan to modify the TDA1543 analog output like I did here (attachment)

I may decide to run the TDA1543 off 5V instead of 6V.

This should give me tube sound from a computer via a resistor I to V and then tube CF. Oh, I'll build the board as designed first (but skip the relay and hard wire it to TDA1543 output mode), to be sure the thing works, before doing the mods. Which should be minimal on the board itself (change a few resistors). The tube circuit would be built on its own board or chassis.

Hopefully I'll receive this kit before I get back to home June 4th, else it's another 3 months after that before I get back there again (long road contract job, no, not Iraq!).
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File Type: gif dddac-usb-1543-dac32a.gif (80.8 KB, 262 views)
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Old 13th May 2008, 06:00 PM   #2
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I have the ddac ,for i/v resistor use riken nice sound ,but why add an active stage ? you need a preamp?

for V this dac have a sweet spot for good sound .........

put tent clock the difference are big......
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