The Moog MF Trem Minifooger Pedal is an analog tremolo crafted by the Moog tone masters in North Carolina. This trem effects pedal is fantastic and creates a vast range of different trem effects - from the classic optical and hard tremolos responsive to harmonic content, or ones more like phasing and chorus. Its four controls allow plenty of variability, and the expression pedal input gives you even more control, specifically with the Speed control. The Shape knob sweeps between the different modulation shapes - from a steady rise and fall, to a more percussive musicality, or a smooth, almost-reverse effect. Speed sets the overall tremolo rate. At slower speeds, it's more swirling and lush, while at higher settings it's more reminiscent of a classic rotary speaker. The Depth control acts like wet/dry signal control, but is also used in conjunction with the Speed and Tone knobs. And Tone lets you control how subtle or in-your-face the tremolo effect is. A super cool, all-analog pedal, the Moog MF Trem Minifooger Pedal delivers easy to use, great sounding options, but also offers a lot of creativity for those that love to experiment. Requires 9V power supply.