The first model developed was the MOD Quadra, given this name based on its 4 foot switches and 4 screens with knobs. There are no limits to how these controls can be customized.
It has two independent audio outputs and inputs, in addition to a MIDI input. Both its inputs and outputs are universal, allowing almost any instrument or audio device to be connected to it.
Add all this to the possibility of assembling your pedalboard with your desired effects in the way that you want, and you will see that the MOD Quadra can be used in an infinite number of ways.