Singularity 19 DAC:
http://www.audio-gd.com/Master/Singularity19/Singularity%2019EN.htm
http://www.head-fi.org/t/831737/audio-gd-singularity-19
DA-M1 Module only:
http://www.audio-gd.com/Pro/diy/DA01/DA01EN.htm
http://www.diyaudio.com/forums/digital-source/302535-audio-gd-da-m1-r2r-dac-module.html
http://www.head-fi.org/t/830532/da-m1-r2r-diy-module-by-audio-gd
It seems like everyone is waiting for first feedback on this.
http://www.audio-gd.com/Master/Singularity19/Singularity%2019EN.htm
http://www.head-fi.org/t/831737/audio-gd-singularity-19
DA-M1 Module only:
http://www.audio-gd.com/Pro/diy/DA01/DA01EN.htm
http://www.diyaudio.com/forums/digital-source/302535-audio-gd-da-m1-r2r-dac-module.html
http://www.head-fi.org/t/830532/da-m1-r2r-diy-module-by-audio-gd
It seems like everyone is waiting for first feedback on this.