B4 is a DXi, VSTi and standalone, and works with a midi controller, so yes, you can use the Tyros as a controller Mike. It won't play "through" any keyboard. Like any other Dxi / VSti, you use your host propgram and computer soundcard. My Midiman Audiophile soundcard outputs directly to my studio mixer - soundsystem, as do my keyboards, so I can play the B4 through the system.

My problem with Charlie is that there is no working demo. Besides that, it's a sample based program. We have enough hardw ware and software romplers in the world that can already do that, and while some come fairly close, they still don't really reproduce the authentic sounds accurately across the entire range of the keys. It's no different than trying to emulate a guitar or sax. There are physical limitations that samples just cannot readily overcome.

The B4 uses a type of physical modeling and has been declared by many sound magazines as well as some pro players to be the closest thing to a B3 - C3 emulation out there, including any and all of today's hardware romplers. My own ears and the memories of hearing and recording a real C3 up close and personal tell me that they are right.

Can you explain how Charlie, at a higher cost, without the actual modeling structures, would be a better value than that ?

AJ