Befaco Muxlicer Sequencer/Gate/Switch Eurorack Module

It’s a clock generator and divider, as well as a CV sequencer, gate/trigger generator, and a switch (mix/demux). It’s tough to explain exactly what this does because it can do so much. It has a huge number of creative uses beyond what the manual will tell you, as well.

Befaco makes some brilliant modules, and this one is near the top of the list.