Unbalanced to balanced adaptor

I think that with digital there are additional issues - for example, impedance matching (s/pdif = 75 ohms, AES/EBU = 110 ohms) and level (I believe s/pdif is +/- 0.5V, whereas AES/EBU is +/- 5V). I use a Monarchy DIP Classic in part for its s/pdif to AES/EBU conversion; it also improves the sound in my setup. See http://www.monarchyaudio.com/ This isn't a really cheap solution, though, so I suggest you check out this link http://www.rane.com/note149.html which describes the technical issues and points to some sources (which I haven't checked out). You might also try contacting one of the big pro audio sites (e.g., www.sweetwater.com or www.musiciansfriend.com) and see if they offer a cheap solution to this.

I see that I accidentally posted the same link twice, sorry. The actual link with the technical info is this:
http://www.rane.com/note149.html

Thanks for the information. To make the conversion properly does not seem like a simple proposition. I suppose I might also contact the maker of my DAC to see how tolerant it would be of a passive solution. Thanks again.

Cardas makes them. I use them for the same purpose. Find them in the Music Direct catalog. $50 for a pair. I don't find that they make a difference positively or negatively.

Cheers.

Did you ever resolve this, Jayboard? My impression is that it's not like converting unblanced to balanced interconnects because you are taking one standard (S/PDIF, here implemented as coax but it can also be done as Toslink) and converting it to a different standard (AES/EBU). But maybe that doesn't matter.