i wouldn't try it unless i had a money-back return option.  i tried a gw-labs dsp. (supposedly similar, if not identical to the monarchy upsampler combined w/the monarchy dip.)  it made my self-modded art di/o (similar but not identical to the mensa), sound etched, harsh, basically unlistenable.  others have had similar expereinces, but others have also liked it.  so, you mite wanna try, but w/a return option.
doug s.