Ernie Ball Expression Tremolo delivers foot-sweepable tremolo control, all without taking your hands off the guitar. Each component was carefully designed for the highest sound quality and performance available. The sleek, compact design maximizes playability while minimizing the footprint on your pedal board. The Expression Series' innovative design provides continuous, usable tonal control at your feet throughout the pedal's entire range of motion without colouring your tone. The pedals provide complete signal transparency in the zero position. Plug in and play this versatile new tool and unleash your creative expression. The sealed aircraft aluminium chassis offers a mechanically and electrically superior experience by protecting internal components from outside elements.

Features:
• 5 different tremolo waveforms: slow rise, slow fall, sine, square and harmonic
• Control depth, rate, or both simultaneously with treadle
• Spring reverb level adjustment