The ES-5 is an expansion module for the Expert Sleepers ES-3 Lightpipe/CV Interface, ES-8 USB Audio Interface, ES-9 USB Audio Interface, ES-10 ADAT Interface, disting EX and disting NT modules. It connects to one of the host module's stereo channels and provides eight gate/clock/sync/MIDI outputs on the ES-5 itself, as well as additional expansion connectors for connecting up to six expansion modules, such as the ESX-8GT Gate Expander, the ESX-8CV CV Expander or the ESX-8MD MIDI/DINsync Expander.