Yet another Discrete R2R Multibit Dac, this one from Audio GD.

Their all starting to jump in to do discrete r2r multibit.

http://www.audio-gd.com/R2R/R2R7/R2R7EN.htm

Cheers George

georgehifi07-26-2017 9:00pm

randy-11 Details Discussions Posts This discussion 1,913 posts 07-26-2017 at 09:06pm Copy Comment URL Report Comment Edit Delete how does the FPGA control and correct the R2R ladder?
georgehifi OP Details Discussions Posts This discussion 10,312 posts 07-26-2017 at 09:34pm Copy Comment URL Report Comment Edit Delete I think Halo or someone does something similar, some sort of feedback correction to get accurate resistor tolerances. Just noticed it has a TCXO (temperature controlled) clock as well, with (PCM / DXD / DSD Native support. Being done by Audio GD it could be one to look out for for doing RedBook pcm, certainly priced right at $2.5k. Shipping prices from these guys are always cheap. Cheers George
georgehifi OP Details Discussions Posts This discussion 10,312 posts 07-27-2017 at 08:51am Copy Comment URL Report Comment Edit Delete Here is a well done video preview by and independent reviewer, explaining in good detail how they get around R2R resistor accuracy. https://youtu.be/AhYXKKabZgc Cheers George
arh Details Discussions Posts This discussion Message User 366 posts 07-28-2017 at 02:14am Copy Comment URL Report Comment Edit Delete Audio-gd has been doing R2R dacs for a long time I have there Master 7 and it is a great dac Alan