A successor to the Univibe.
[product page] From the description:

The Voodoo-Vibe+ is the latest evolution of the Univibe as used by Jimi Hendrix and Robin Trower. The Voodoo-Vibe+ will faithfully reproduce all the old retro sounds and incorporates the modifications I personally developed for Jimi. The Supervibe was my next evolution of the Univibe and many leading performers including Stevie Ray Vaughan and Robin Trower used this unit. The Voodoo-Vibe followed the Supervibe and is accepted as the industry leader and used by many top performers. The Voodoo-Vibe + also has a Tremolo circuit plus the usual Chorus and Vibrato functions and the control of the sound parameters has been greatly expanded. The addition of Pulse Square waveforms to the normal Classic waveforms is a valuable and useful addition to the sweep capabilities. The Speed of the sweep generator has also been expanded together with the Symmetry Range and these features greatly increase the options of producing many new and unheard effects and the Voodoo-Vibe+ is a modern and worthy successor to our very successful Voodoo-Vibe. The art of analogue processing has moved forward.

Seen in a Teargarden-era studio photo atop 2 Ampeg heads.