It is an analog bbd multi-chorus with 6 different modes that takes the chorus effect to places its never been. 

There are 3 Chorus modes that can do pretty much anything possible in terms of Chorus/Vibee. Literally, it goes to both extremes of speed, depth, feedback, tone filters and anything in between. ROTO mode lets you ramp between two different speeds (leslie style), DEPTH mode lets you ramp the intensity of the effect  and STINGmode lets you ramp the delay time of the chorus (a pretty insane way to mess with the modulation).