Wow, a rock-solid reply ;D This clears up some of the questionmarks hanging around my head! ??? This definately answers my question. I went into reason right away and discovered the fact that there's no midi out :( So it will be "absolute pots" then... The nasty thing will be that if I change banks while performing, all knobs will change position right away. Ok, but what if I, for instance, turn a mute channel off with my mouse? The MIDIbox will not get a signal to turn the led off because Reason doesn't send out MIDI data right? Will, from that moment on, the led be inconsistent with the actual on/off value in Reason? I understand what you mean. But why wouldn't this little trick work? What is also weird is the fact that, when I select "Edit MIDI remote mapping" in Reason, the transport buttons DO have green arrows on them. This indicates that they can in fact be mapped to a midi key? Cheers, Robin