Hey todd, A little late answering but I was floating around the ocean in a kayak for a few days.... Yes Repeater is stereo. It has 4 tracks per loop that can be armed as 2 stereo or 4 mono or 1 stereo and 2 mono etc... Repeater also has a stereo FX loop. Our web site has a back panel image that will give you a pretty good idea of the I/O. http://www.electrixpro.com Damon