The Catalinbread Callisto is a Chorus/Vibrato pedal, which employs an MN3007 Bucket Brigade chip at its core. It’s interface is simple, intuitive, and provides a multitude of sounds ranging from subtle and shimmer to rotary speaker-like to off-kilter warping/warble sounds. A twist of the DENSITY knob continuously adjusts the delay line time delivering classic chorus sounds from fat & warm to airy & subtle. MIX knob smoothly dials everything from lush chorusing, to true pitch vibrato, to sea sickening warble, and has the ability to run clean dry to completely wet. The sweep depth of the chorusing is controlled by the WIDTH control. The RATE range can go from slow and syrupy to almost ring-mod intensity.