OP-Z, sample and mic input July 03, 2019 12:23 the OP-Z will only support mic input for headset. the headset button is not mandatory, the microphone source can be activated with SCREEN+SHIFT as well. Related articles OP-Z - does it sample? OP-Z, what external equipment is required to use DMX? OP-Z, how to export projects? OP-Z, how do i hook up my unit to a monitor? OP-Z, can i import my OP-1 synth patches or only sample patches?