This is perfect for edit of synths with a PC or mix midi a keyboard and a matre case of Controller.
This little box is a marvel, the type of accessory that can not happen to have got aprsy simple, powerful (even when it is 4 channels and not just two as in an A-880) and compact (can fit anywhere in his setup). The price seems lev but if your concerned about your connection, it is a must if you possdez a lot of hardware. Yes I do it again this choice (in fact difficult to find a used one!).