Blender

The Blender will read any LLAPI capable device or two devices and mix the signals together or split it apart. The output can be LLAPI, USB or both at the same time. If you wanted to split apart one controller in to two device, or combined two devices in to one, this is the tool for you.  To program the Blender you will need a Window based PC. The Blend tool is available in the download section.  The Blender itself is an inexpensive board that comes with a default program loaded. You may add cables and a case to the board as product options but it uses micro usb ports as it is a small design. The cables for purchase are just micro to USB A. OTG is not required. If you have cables, you do not need to buy the cable option.  NOTE: This product requires an input LLAPI device. Like, but not limited to; The Bridge, GPA, Gamer-Pro, 4-Play ( in single mode), Gamer-Pro jr. BliSTer, LLOAD, LAMMA, and possible others. Do not buy this if you do not own a LLAPI capable device.