Yes i know, or think i do/did. I wasnt impliying that you use usb midi in a thru configuration. But as i understand you are creating a midi device as such each device has sixteen channels of midi avalable to it. By adding another device you are adding sidteen more but on a, seperate, midi network. They they are connected via th sequancer. Cubase can run hundreds of channels of midi but they are in groups of sixteen via seprate devices. So as i said you will only get a channel conflict if youre on th swme device. If i,m wrong and the device you are using actualy represents just one channel, but you would still have a common device. Maybe youre right.