The Meng Qi Split module is a handy one. best to think of it as a passive 1 IN 5 Out multiple. There is an Input jack (top left) and a Thru jack (top right). The remaining outputs below have corrisponding attenuators. This could be used as an "aux send" module for routing signals to FX in your rack. The kit is quick and easy to assemble. Great for beginners!