I have pedal which I would hate to loose, but I never use it playing with others. Too off the wall.
Peavey Stereo Effects Processor DEP-16. Late 1980's origin.
It has digital sounding choruses and flangers fairly typical of it's eighties era vintage. Nothing too special.
Then there is the depth/rate pot. Someone at Peavey MAY have been a Hawkwind fan. Just maybe. The depth and rate of the effect are actually inverse of each other. The Depth adjusts the range of a frequency modulation sweep and the rate the overall speed of the sweep.The result is that the effect has an auto shifting modulation, it cascades up and down AND slower and faster at the same time. Playing single notes produces a very unique pitch and speed ring-modulation delay. Vocals are fun too!
But then it also has a "Regeneration" pot which reintroduces the modulated delayed output back into the input of the effect which is at a varying angle out-of phase with what the dry input signal from the instrument. Madness! When playing consistantly with the regeneration and depth/rate at or near full CW it...
...creates wormholes...
Totally over the top effect, conventionally a useless pedal, I swear this must have been invented solely for the purpose of entertaining an audience comprised of people tripping hard on acid.
I have never seen another one, but someone else owns one. That person put up a review on Harmony Central. Look it up if interrested. I have enjoyed sharing, hope some were entertained. If you had any part in the development of this device, please contact me.