Mid-Fi Electronics • Product Name: Random Phase & Vibrato (Phase & Vibrato / Random Modulation Pedal) • Features: A very simple configuration with two parallel phase shift/vibrato circuits, and a single knob to change the blend ratio. • Operation: Turning the knob all the way to the left gives you a 3-phaser + random LFO. Turning it all the way to the right gives you a 5-stage vibrato + a somewhat active random LFO. Around the center, the two are blended, producing an effect like "random phase cancellation (phase/vibrato mix)". Thank you for viewing. I purchased this a few years ago and used it a few times. It's in very clean condition, but please understand that this is a used item before purchasing.