the MSB Universal Transport is a super-hot rodded Oppo Blu-Ray player...with separate powersupply, new buffer, and other things...i'm no techie. Bottom line, it should do everything an oppo can do...which should include dvd-a, blu-ray, cd, sacd...and because it is proprietary out to its own DAC...i believe the i2s should take the sacd signal too...please check on this, but it should work since its effectively remaining encrypted. I know you said no sacd, but it is part of the UMT.
AFAIK, the UMT outputs always PCM, and SACD is converted to PCM before going to the DAC through their proprietary connector.
Anyway, MSB was listed among those producers which are agreeing on a common platform to stream native DSD, so something may change...