Like everything in the guitar world, there’s a lot of debate about the differences between active and passive pickups and which are better. And like everything, it’s absolutely subjective. In my experience, passive pickups pick up more of the unique resonances and vibrations from the guitar, but active pickups tend to benefit the subtleties of the player’s actions on the string.
It is said that Dragonetti influenced Beethoven’s composition deeply, reorienting the composer’s eye toward making more creative use of the double bass in how it interacts with the rest of the orchestra. As for his own composition, he really took it upon himself to expand the repertoire for double bass, having written dozens of short works for double bass and piano, string quartets, as well as a sort of “instruction manual” with exercises and studies for the instrument!