Metrum Pavane NOS DAC

Yeah, my experience with 1bit DSD DAC was... beyond horrible.

6bit R2R Delta Sigma DACs are actually pretty good, Burr-Brown call it "advanced segment", Onkyo receivers/processors got it and it sounds great and is super cheap!

Sabre Delta Sigma DAC sucks, similar to 1bit DACs, sigh.

And finally, fully R2R DACs are heavenly.

Let's see where the DIY Soekris R2R DAC goes, could be awesome sound quality at dirt cheap prices.

I am not totally sure but I think the ad5791 has no internal IV converter. If you make a discrete R2R DAC as MSB and TotalDAC do they both have voltage out without an IV converter. I think the same for this part.

From what I quickly saw on the data sheet of the ad5791 it has voltage outputs, not current, which usually means it has it's own I/V stage built in.

Cheers George

The AD5791 datasheet describes it as providing a voltage output, but one that is unbuffered, and that has a high nominal output impedance of 3.4K. So when used in a DAC component it would almost certainly require a separate buffer stage, and as Ric indicated it is very conceivable that its voltage output is driven directly from the resistor network.

Regards,
-- Al

Sorry Al Separate Buffer? or separate I/V then buffer??
Correct me if I'm wrong.
As from what I saw there were no current (mA) output figures given for it's output, which all manufactures give for current output dacs. Also Look at page 26 Positive input to the opamp, and no grounding of the negative.

Now look at the page 9 of the PCM1704 I/V stage neg input with grounding of the positive for low impedance input. Same for what I've seen for most current output dacs on data sheets.
http://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&sqi=2&ved=0CCQQFjABahUKEwiixfXOwqzHAhWlqqYKHRcmAYI&url=http%3A%2F%2Fwww.ti.com%2Flit%2Fds%2Fsymlink%2Fpcm1704.pdf&ei=p_DPVeLVNKXVmgWXzISQCA&usg=AFQjCNEK5ScUy3tujTC6njrwwvKnluukTg&bvm=bv.99804247,d.dGY

Cheers George