Quad analog switcher / mixer

The EMW Analog Switch 4X is a 4 channel mixer that let’s you switch each of the for channels on or off by using either the switches available on the front panel (great for managing multiple channels in live setups) or CV signals patches into the SW inputs (which can be used in many different creative ways in both live and studio setups).

http://www.electronicmusicworks.com/eurorack/analog-switch-4x.html