Using the “Sync Out” function of the Tascam 414, I was able to record a CV using the Korg SyncKontrol app to track 4 of the 4 track tape loop. The sync out jack plays the recorded CV automatically, which allowed me to use track 4 as the input for the Korg Volca Keys. You can see the pulses from track 4 on the Tascam triggering the tempo of the Volca Keys. I also use the pause function of the Tascam to show how the Tascam is indeed controlling the Volca Keys sequencer.
Equipment: Korg SyncKontrol (to record CV to tape) Tascam 414 Korga Volca Keys Alesis Wedge Sony Walkman Korg Monotron