Another scenario that I'm very familiar with.

I owned the Motion Sound Pro3-t which is the spinning rotor equivalent of the KBD3D with a Hammond pre-amp tube built in. I sold it 2 weeks later. It just did not provide me with the incremental realism I was getting over and above the PSR 9000 and a Stereo amp setup that I was using.

The problem with the Motion sound amps is that the rotating speaker is only a single horn with a counter-balance on the other side of the horn. Thus with a one horn setup, it doesn't move as much sound waves as a dual horn. The other missing component is the bottom rotor which really moves a lot of air to give you that spatialization that Leslies are noted for. Save your money and invest in a good stereo amp setup with a 2000 or a Tyros.

Al G.