Grailbass, as you can see, Alembics have a variety of sounds based on wood combinations, electronics configurations, pickup types, string types, whether or not there is a sustain block, and I’m assuming scale length. For instance, I have a couple of Series basses with zebrawood tops and backs, but different core woods, and they all sound slightly different, but they all have a very distinct Alembic sound.
Also, the Brown Bass has more of a Series I electronics configuration (but different pickup types and some different electronics components). The Series II has continuously variable Q dials (CVQ), where as the Series I and Brown Bass have 3 position Q switches. I prefer the Series I configuration, but that’s just me.