From HiFiDuino: The Soekris R-2R DAC

A while ago I have been notified about a very interesting DIY project at HiFiDuino: the Soekris R-2R DAC. The DAC is based on a set of Burr-Brown PCM1704 DAC chips (one of the best multibit chips, now out of production).
The DAC has the potential to be class leading for a very affordable price, given its open source nature.

The Soekris R-2R DAC is extensively described at HiFiDuino Website:
https://hifiduino.wordpress.com/2014/10/12/r2r-for-the-rest-of-us/

The article is a bit old, and in the meanwhile kits have become available on Soekris website:
http://soekris.com/products/audio-products/dam1021-01.html

There is a very extensive discussion on DIY Audio, deserving to be followed:
http://www.diyaudio.com/forums/vendors-bazaar/259488-reference-dac-module-discrete-r-2r-sign-magnitude-24-bit-384-khz.html

Most likely, fixes and improvements of the Soekris R-2R DAC will released in future revisions.
 
Soekris R-2R DAC