The Phoenix Audio Spider itself can only be the master or primary device in a daisy chain situation (the first of the chain) but it can can have up to 15 other Phoenix Audio (like the Quattro3) units following in the chain.

All these devices will still need power. That can come from each one being plugged into a USB port,  having a power supply for every eight daisy chained units, or using the daisy chain power kit (MT320 to provide power to each unit.