Rachael was developed as a companion module to Deckard's Voice, addressing the ring modulation capability present in the original CS-80 but omitted from the single-voice Eurorack module. The name continues Black Corporation's Blade Runner theme—Rachael was the replicant love interest of Rick Deckard in the film.
The ring modulator circuit in the original Yamaha CS-80 was a distinctive feature that contributed significantly to its unique sound palette. It allowed for the creation of metallic, bell-like tones and complex inharmonic textures that differentiated the CS-80 from other analog polysynths of the era. By offering this as a separate module, Black Corporation allowed users to add this capability to their Deckard's Voice while also making it available for use with other sound sources.
The inclusion of a switchable VCO/LFO and ADSR envelope makes Rachael more than just an effect module—it's a multi-functional tool that adds value to any Eurorack system. The design philosophy mirrors that of the full Deckard's Dream: authentic recreation of vintage circuits with modern reliability and integration capabilities.