Where most tremolo pedals stop at recreating classic amp tremolo, the Earthquaker Devices Hummingbird flutters on. Three knobs—depth, rate, and a JFET clean-boost level control— feed a three-way mode selector that dials in those classic shimmery trem tones and all-out agitating, synthy, bitcrushing ring modulator territory. The handy expression pedal out helps you control the speed of the Hummingbird's beating wings on the fly.