I'm using Reason 2.5. It accepts two midi controllers. Right Now my Midi keyboard takes up one,and my Radikal SAC 2.2 takes up the other one. Of course the midi keyboard operates as it is, and the Radikal SAC remote controls the mixer and Transport bar in Reason...I now want to add a Evolution UC 16 to control the knobs on the Virtual Synths. The UC 16 is a USB device with a Midi Out on it. I was thinking of going OUT of the UC 16 IN to my Midi Keyboard then into my interface. Or I could go OUT of the UC 16 and OUT of my Keyboard controller IN to a Merge unit then into the Patchbay. What do you think?