The Constellator is an analogue delay pedal with two MN3005 BBD chips (modern versions of those found in some vintage pedals) allowing up to 600ms of delay time, and it has the standard triumverate of Time, Mix and Repeats knobs but also a control for adding modulation.
Two modulation choices are toggled by the Feel button, which adjusts parameters simultaneously for a different flavour – basically chorus or vibrato. Between the two, there’s plenty to explore whether it’s subliminal shading, tape echo-style wobble on the repeats or full-on rich modulated delay.