The Electro-Harmonix Voice Box vocal harmony machine and vocoder packs a multi-functional vocal synth processor into a tough and compact chassis. Sing, and you’ll have a troupe of backup singers following you in perfect harmony. Or use the built-in vocoder to unleash classic synth-robot sounds. The harmony processor creates 2- to 4-part harmonies directly from your vocals, in the same key as your
![Electro-Harmonix Voice Box Vocal Harmony Machine / Vocoder (EHX Pedal Demo by Jack Conte)](https://cdn-ak-scissors.b.st-hatena.com/image/square/598fe3accc5043deabeea1da1e83930db57609f7/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FQnj2oU8MYCI%2Fhqdefault.jpg)