Do I need an audio interface with more than one MIDI out to control (via Ableton) two instruments with only MIDI ins? The instruments I want to control have only MIDI ins so I can't, as far as I can tell, chain a signal.  If I want to control more than one instrument do I need to buy another audio interface or is there some sort of work around?

The instruments in question are an Arturia Microbrute and a Korg Volca Beats.