Up to five ES-4 Gate Expanders can be attached to an ES-4 - One module per ES-4 channel. (The 8 outputs of the Gate Expander reflect the 8 bits of CV information passed to the ES-4's DACs.) Therefore, you can combine the modules to create a system with up to 40 independent gate outputs, all driven by a single S/PDIF connector.
The eight outputs of one expander correspond to the eight bits of the CV information at the digital / analog converter of the ES-4.
Output voltages: 0 V / +5 V.
One LED per channel shows gate activity.
The module is passive and consumes no power.
Eight 3.5mm minijack sockets (mono), DC coupled.
Internal connection to the ES-4
3U Eurorack module, 4 HP wide, 24 mm deep
Passive module = No power consumption