BBE TR-63 Tremor, electric guitar effect, tremolo, dual mode tremolo pedal, following the examples of classic amp tremolos, 2 speeds adjust- and switchable, controls: speed 1, speed 2, depth, switches: speed 1/speed 2, on/off, military-spec board (sturdy construction), blue status LED pulsates in effect speed, true hardwire bypass, powered via battery or optional power supply (# 108096)