I really don't get why to make a device as difficult to setup as this one is. My band bought this to be able to set up a live perfomance in ear system, to sent the internal monitoring to each band member individually and besides send samples to the main mixer. Also, we wanted to use it for recording purposes (drum recordings).
Yet I can't say we didn't achieve the goal we purchase this item for, I can say that it wasn't easy AT ALL. Even bringing an expert engineer wasn't easy. They have a extremelly difficult routing system that enables and disable inputs and outputs in groups of eights. We figured this out after a really long time reading the instruction manual, searching for videos on Youtube and simply experimenting.
Once the devide is setup, it works really well and the capabilities are endless, but for me, it drove me crazy to the point of wanting to return it.