Request DAC plans: CM6631A > TDA1543

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ro9397

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Joined 2007
#1
One hour search was negative.

I would sure love to find DIY kit or plans for a DAC with the following specific architecture:

  1. USB input only, omitting two SPDIF buffers (one each at the load and source)
  2. CM6631A USB transceiver directly feeding I²S Philips NOS TDA1543 chip
  3. Power Supply: high-speed rectifiers, choke-input filter, RF shielding, low-noise
I heard a $1k DAC with the above architecture, the first to make me desire a music file system. I tend to believe the designer who says it outperforms HR music files > HR DAC. I have long term experience with DACs up to $7k.

The DAC requires only unbalanced output, with moderate current for a 47k Ohm load, moderately high gain active SS preamp.

Thanks!
 
#3
I won't mention the $7k DAC because I never gore audio ox.

Re. the $1k DAC: I know "cloning" is common, but I am concerned of unwritten rules regarding such. It might be bad manners to mention the make/model DAC, which is currently in production.

I should just buy it, but would prefer to save funds, plus DIY is of course fun and rewarding.
 
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