So many responses, thanks guys! smile

Does the MS200 allow additional room correction/DSP? I'll need to dig in a little more on this Roon business. Currently I use Squeezlite (Squeezebox server) on the RPI -- it doesn't seem like the MS200 supports Squeezebox as a front end and Roon doesn't work on Linux.

If there was just a USB to SpeakerLink convertor, that would be all I need, but it doesn't seem that such a thing exists, sadly.