This is a topic of interest to me. I have been gigging for years as a one-man band with Yamaha PSR boards (630/2000/3000) going directly through a lone Motion Sound KT-80 (100 watts) 2-way amp. It does not have a pole mount and as such I normally place it on the floor either directly in front of my keyboard or to the side where necessary. Recently the idea of selling the amp and replacing it with a full-blown stereo system (perhaps with subwoofer) has been floating in and out of my mind but as of yet I have not felt any impetus to make the switch. I'm quite comfortable with the one-amp setup because 1) it's MUCH easier to shelpp and setup with the one amp compared to a stereo setup (which in any case would likely include a powered mixer of some sort) and 2) while I as a musician obviously hear and "care about" the loss of stereo imaging in the sound that the audience hears, I really can't help but wonder how much of a difference it makes to the audience. We're not talking about concerts -- I do mainly reception and dinner-type event where people spend most of the evening eating or listening to speeches. Some events do involve dancing but I get the impression that people care more about having a beat to move their feet to than whether or not the guitar and horn parts are coming to their ears from the same direction. In addition, many of the venues I see have what can only be described as poor acoustic qualities, and besides for the lucky few seated within reasonable range of the speakers, it doesn't seem that the stereo effect would carry throughout most of the room. I guess ultimately the question for me boils down to 1) will I get more business with a stereo setup and 2) if yes, is the increase worth the extra expense/bother of having a stereo setup? Your thoughts are appreciated.