Hi - I have Roland 104 sequencer that I love. Can’t enjoy playing if its unpowered.
Last time I managed to sync my midi devices by sending Roland 104 gate pulse to “Human Clock” device that is supposed to translate bass drum beat to midi tempo… But the result is a bit artistic as the tempo varies a lot when I change the gate parameters.
So - the best thing for me would be to get -/+5v gate pulse on every beat and synch the analog sequence with it.