Many SACDs are issued in stereo only mode. A processor that can accept a stereo DSD signal, and is therefore not able to apply room correction and/or bass management control, but would presumably have superior digital to analogue conversion (instead of this function being done in the player), is very desireable. By it's very nature, two channel stereo doesn't need these post processing functions nearly as much as multichannel music does. Of course, you need two full range speakers in this case, or a subwoofer that can accept speaker level input and apply it's own bass management.