Vintage tube warmth can be yours with the Voodoo Lab Tremolo, an effect pedal that's sure to get you noticed. The Voodoo Lab has been built with genuine vintage parts and construction to give you true tube sound and not an emulation. The slope feature gives you the ability to warp your sound from a warm, soothing tremolo to a jittery stutter, and the speed and intensity knobs enable you to achieve the precise effect you're looking for every time. The Voodoo Lab Tremolo requires only a single 9 V battery to run, and best of all, it's made right here in the U.S.A.