Yes, it's a 3/4.
I got hooked on Alembics after I saw a Return to Forever concert. My first really good bass was a '77 short scale I bought new and sight unseen from Fullerton Music. I just wanted the bass that Stanley was playing. Previously, I was playing a '74 p-bass and a '75 Ricky 4001. A few years ago the Alembic bug hit again and I started looking for a short scale. I just got the BB a few weeks ago and I'm in love again. In stereo it really brings back memories of my old blue-box rig. A stereo 1/4 plug isn't as cool as the old 5-pin cable, but the sound is there.
Yeah, I sold all that years ago: dumb!