The Leslie sim, and Chorus, Delay, and Cross Delay, and many other effects are designed to be most effective (no pun intended) in stereo.

That's why I'm going with TWO Compacts...I was very pleased with the sound of the L1's in stereo, even at quite a distance from the source, and even at various points around the room there was quite a difference as opposed to one.

I can't explain why the stereo sweet spot is so large (perhaps, Diki can lend his expertise), but it is greatly enhanced, and made the purchase of two (rather expensive) systems well worth it.

Now, that I'm no longer doing concerts, I sold the L1's and I am investing in a pair of Bose Compacts, which do the same thing to the stereo signal as the bigger system.

My PSR-S900 sounds terrific through the stereo Bose, and the Tyros3 is even better...your PA-800 will really come alive through two Compacts.

Ian