The Electrobass is an instrument that takes inspiration from the interface of the bass guitar, but is in fact a flexible synthesizer. The Electrobass has roots in instruments like the SynthAxe, the Casio DG series, and other commercial guitar synthesis instruments, but applies this mindset to the bass guitar with a new approach. The technology is closely related to the authors' Electrosteel instrument, and the Electrobass was developed simultaneously as an alternative form for the underlying idea. This paper outlines how the goals of the Electrobass differ from the Electrosteel, and what changes from that paradigm the bass guitar's interface demands.