Eventide have long offered a plug-in version of their 1972 Instant Phaser hardware, and now they've revisited it to add both new capabilities and the ability to 'age' the circuity by introducing modelled component value drift.
MangledVerb first appeared as an algorithm in the rackmount Eventide Eclipse effects units. It then migrated to the H9 guitar pedal, and is now available as a self-contained plug-in supporting all the usual formats.
Software instruments range from the massive and deep, such as Spectrasonics Omnisphere, to the very basic. Psychedelic FX 6000 V1 definitely inhabits the simpler end of the spectrum — and that’s all part of its appeal.