Al,

My Mediastation MS X-88 Pro has 4 xlr outputs configured as 2 stereo pairs. One stereo pair for the Main mix L&R, and one stereo pair for the Cue mix L&R.

So it is definitely stereo and sounds great with the Native Instruments leslie simulation going.

Also, to the delight of any professional sound technician, they are of pro grade XLR instead of simply the 1/4 inch outputs that all my previous keyboards have had. So no hassle of dealing with an external direct box or converting the high impediance to low for longer runs and less interference.

The additional mix out2 is also stereo but in the traditional 1/4 inch format.

Hope this answers your question

Richard