The JAM Pedals - Chill Tremolo is a solid, sine-wave, vintage-style tremolo. This pedal delivers on that the warm, warble-less volume modulation that came with most Fender style amps, with a clean boost that sounds great if you turn the amplitude off. Harmonically rich in all the right ways, this pedal is handmade in Greece along with the rest of the JAM line. Jam Pedals are hand-painted and vary slightly in appearance.