The Audible Disease Fracture FR-1 is a dilapidated high-gain oscillating distortion and tremolo unit designed to bring broken audio hurting to your sound. Controls allow you to adjust the speed of the tremolo sound (the SPEED knob) as well as the oscillation of the distorted sound (the STAGGER knob). The LED next to the SPEED knob gives you a visual cue as to how fast the tremolo is pulsing. Tremolo speeds range from extremely fast to extremely slow (about 60 milliseconds to 3.4 seconds). Plug it in for laods of decayed audio torment! Operates with a standard 9-volt battery or a standard 9-volt negative tip barrel type 9-volt DC power adapter (sold separately). We recommend the Visual Sound 1 SPOT power adapter available here.