The Voodoo Lab Tremolo is a versatile tremolo pedal that emulates vintage tube amp tremolo sounds. It uses optical circuitry and a lamp/photocell assembly for warm, mind-bending trem vibes. It offers a wide range of control, from slow, deep tremolo to a hard "machine gun" stutter, with slope, speed, intensity, and volume controls for shaping the effect. This pedal provides a wide range of tremolo effects for any amplifier, with a buttery and seductive tone.