Guitar effect pedal. Expression Tremolo delivers foot-sweepable tremolo control, all without taking your hands off the guitar. Choose from 5 distinct waveforms (slow rise, slow fall, sine, square, and harmonic) plus onboard vintage inspired spring reverb to create subtle or dramatic pulsating soundscapes. Control depth, rate, or both parameters simultaneously with the foot treadle. The Expression Tremolo's sleek, compact design maximizes playability, while minimizing the footprint on your pedal board. Unlock a virtually limitless tonal palette that simply can't be matched by traditional''on/off'' stompboxes. The sealed aircraft aluminum chassis offers a mechanically and electrically superior experience by protecting internal components from outside elements. Leveraging the 40+ year heritage of our volume pedal, the usability, easy-access controls, and no-slip grip have been incorporated and modernized. Mono Input/Mono Output with 6,3 mm jack. 9 V Input (power supply not included). Colour: Blue