The Buzz Box lies at the heart of this one. So does the LPB1 and an assortment of other refinements. Well, on second thought, maybe “refinements” is a bad choice of words. Let’s just say, “mods.”
Worth mentioning, this pedal is extremely sensitive to your attack. On guitar, you feel it more than hear it. But, on bass, it is especially audible. Check it out. I didn’t adjust or switch anything when I was recording the bass clips. The change in intensity is purely the result of my playing dynamics.