The Tranquilizer features a control that sweeps between its phase and vibe - you can plump for either effect or combine the two for some shimmering, wobbly tones like a Leslie speaker hooked up to a Uni-vibe.
The focus control is a bit weird - very little happens until you hit a sweet spot where the effect intensifies.
It's eccentric, but we've grown to love it. We have no such qualms with the Fat knob. Some phase/vibe pedals suck the bottom-end from your sound, but this one boosts it.