Ernie Ball 6188 Expression Tremolo Pedal

In Stock

The Ernie Ball Expression Tremolo provides foot-sweepable control of Tremolo and Reverb effects. Choose from 5 distinct waveforms (slow rise, slow fall, sine, square, and harmonic) onboard vintage inspired spring reverb.

Unique Hands Free Tremolo - Reverb Experience
The Ernie Ball Expression Tremolo provides foot-sweepable tremolo and reverb control, all without taking your hands off the guitar. The advantage of this is that the guitarist gets to experience all the tone and vibe of a vintage amp with a tremolo and reverb, but be able to manipulate parameters like speed and depth while simultaneously playing their instrument. 

Five Distinct Wave Forms  
Choose from 5 distinct waveforms (slow rise, slow fall, sine, square, and harmonic) plus onboard vintage inspired spring reverb to create diverse 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. 

Ernie Ball Quality
Each component has been carefully selected for the highest sound quality and performance available. The Expression Series' innovative design provides continuous, usable tonal control at your feet throughout the pedal's entire range of motion without coloring your tone. The pedals provide complete signal transparency in the zero position ie. no tone loss. Plug in and play this versatile new tool and unleash your creative expression!

Rugged Aluminium Chassis
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 the Ernie Ball volume pedal, the usability, easy-access controls, and no-slip grip have been incorporated and modernized.


  • Controls: Depth, Rate, Wave type and Reverb level
  • 5 unique wave types:
    • Slow rise, Slow fall, Sine, Square & Harmonic
  • Input and output: 1/4" Jack
  • Enclosed aluminium chassis to protect electronics
  • PVC coated kevlar cord (connects foot pedal to expression pot)
  • Standard 9V 100mA center-negative power operation (adapter not included)


View PDF brochure for Ernie Ball 6188 Expression Tremolo Pedal

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