I reported this fantastic Leslie 122 simulator last month with no play on it. I have since bought it and tried it on all of my keyboards. Eventhough there is a marked difference in the KN7000,G70, Nord Electro, and Kurzweil 2661, the main stumbling block was to have one keyboard do it all. In other words, if you run the mains into the Ventilator, you can hit bypass and play other instruments, but not full Leslie on left and straight sax e.g on the right hand.

The Technics and Roland can't put drawbars to direct out, but I found a way to to it on the G70, and it sounds really great. Instead of directing the drawbars to direct out, I reversed everthing, including sequencer, to direct, and kept one left and one right keyboard part on main. This way, I can manipulate left or right drawbars on the fly and choose any instrument in addition. If I want to play over a midi, it, also, bypasses the Ventilator.

I'm telling you guys I have had many Leslies, Motion Sound Pro-3, and Nord, and outside of a real Leslie, there is nothing that comes close to the Ventilator.
http://www.google.com/search?sourceid=na...+rotary+speaker