Can you add more channels?

Moku:Lab has 2 input and 2 output channels

Moku:Lab has 2 input and 2 output channels together with a trigger input, a 10MHz reference clock input, and a 10 MHz clock output.

If you need more inputs or outputs,  it is easy to synchronize multiple Moku:Labs via their reference clocks.  Multiple Moku:Labs can be controlled by one iPad or with one PC via Python, MATLAB or LabVIEW.