Converter Update.
After trying a number of DACs have found the ideal one for my set of DIs. It is an RME UCX that I had available as a unit no longer being used in the studio. Set up with its TotalMix computer interface, it provides readings of JRiver files that are startling realistic. In particular, it is superb at soundstage localization AND, just like the DIs, disentangles dense textures (such as large orchestras) with great accuracy. If you run across a unit, give it a try.