There are four effects available: rate, depht, res and manual
I guess that's a fact and it has an analog input jack and an output jack that's all

UTILIZATION

The configuration could not be easier

SOUND QUALITY

In my case my bf-3 and despite the many options in addition to the standard and ultra flanger bf-3's in my opinion can not rise to the bf-2, which generates an audible vibration much more clear sound and feel a little less cold than the BF-3.
I use almost all the time with the flanger delay dd-6 and sometimes without an amp even better to hear the typical oscillation, it makes one feel intense and almost hypnotic (some good end ...) I use drop6 an electric guitar but hey it works with any other amp and a Hughes & Kettner Warp 7.
I think this pedal is a good pedal, I've never really tested other like the tc electronics ... so I'm happy

OVERALL OPINION

I use this pedal for 4 years since I found it in the attic of my father, it dates from the 80's, I like above all the almost electric oscillation of this pedal, I prefer it that bf -3 for this reason.
The value for money is unbeatable, seriously.