DOEPFER DARK LINK USB MIDI TO CV is a USB/MIDI-to-CV/Gate interface that can be used to control analog synthesizers via MIDI or USB. Technical features include 4 analog control outputs (CV1,2,3,4) and 1 gate signal output on a 6.3 mm jack slot, MIDI input, USB input, Learn button, encoder for glide control. It works with devices with a gate voltage of 5 V and 12 V.