No. Windows device driver does not support cascading USB Audio devices.
We make larger mixers to accommodate your input requirements.
StudioLive AR22 offers 22 inputs.
StudioLive Series III Mixers offer up to 32 inputs on the mixer and 32 more using network expandable stageboxes.
We also offer
Studio 192 USB interface with 8 analog inputs and 16 inputs over Digital
Quantum 4848 Thunderbolt interface offers 48 analog inputs using 25 pin snakes, up to 4 units an be cascaded for 192 inputs total.
Contact the sales team or contact your local PreSonus reseller for more information