This is the Expander for the Intellijel Dubmix module.
It adds VC for the 4 channel inputs
Direct outs plus a stereo return jacks allow you to configure your own aux send system using other VCAs (like a Linix module or uVCA)
Totally passive (no power needed)
Connects via single ribbon cable to Dubmix.
Mini Expander and Aux Expander can both be connected to the main module at the same time.