Both MIDI / USB-MIDI and CV can be used to externally control the knob parameters.
phase8 can be tempo synchronized to other devices over MIDI / USB-MIDI and Sync.
External MIDI devices can be used to trigger notes in the Acoustic Synth, and the sequencer can trigger notes in external MIDI instruments over MIDI / USB-MIDI. These connectivity options allow many possibilities for phase8 to integrate into any creative setup.