Congrats! That is a very unique Alembic, plus it has the LEDs.
I've never owned an Essence equipped bass, but with Vol, pan, filter, you should be able to get a pretty wide palette of tone without too much fuss. If I were you, I'd start with the filter wide open, pan to the neck pickup and then slowly roll off the filter as you play for a bit. That should give you a pretty good indication of the variety you can find there- then pan back to the bridge and repeat. Then the fun starts, which is finding your own sweet spot filter/pan combo.