With the 3:1 Mixer, After Later Audio offers a versatile Unity Mixer for audio and CV signals, which processes signals in the level 1:1. The mixer module can sum up to three sources on two strings each or up to six signals on the lower output by omitting the first output. With the rear panel jumper, it is selectable whether the channels work with 1:1 or 1:3 level. Unity Mixer is ideal for merging several drum modules, if they have their own level control.