Read about it somewhere, but I can't seem to find it any longer. Anyway, I am in contact with Ted about making a cable to connect my Mixpre-D digital to any recorder with digital input (which in most cases is spdif). In this case it's a R44.
Ted (tgakidis) told me it is possible to build a xlr > RCA digital cable tying pin 2&3 together on the xlr side, but has anyone done that with a Mixpre-D? Is there something to watch out for or keep in mind. Otherwise, I will ask Ted to make one and see what happens.