This interface converts MIDI information into 4 control voltages and one gate. It has an external plug-in power supply. It is important that the first control voltage and the gate are always set to MIDI note events, with the pitch bender being converted to the first CV. The remaining CVs can be used to control further parameters of an older synthesiser in the sequencer, e.g. filter modulations. The 3 control voltages can be controlled via MIDI controllers. The interface receives an adjustable MIDI channel, which means that looping the MIDI signal makes sense.