Keyboard Expression Pedal - Control Volume, Modulation & MoreSynthesizers & Electronic keyboards nowadays come with hundreds of sounds... They also come with many effects. In addition they also provide features to modify the various parameters of those sounds and effects. Why Should You Use It?Ability to change the various parameters in real time, as your hands are busy playing the keyboard, is something of immense help to you as a performer.This is where expression pedals are of great help, since you can use your foot to operate them. Unlike a sustain pedal which holds the notes for a longer duration, a midi expression pedal lets you control parameters like volume, modulation, panning, etc. On its own, the various pedals cannot produce any sound, but it helps you to control the devices that make sounds.  Connections & SetupAn expression pedal basically looks like a small box and has an attached cable which goes in the expression pedal input of your keyboard/synthesizer.Usually you will also find a polarity switch on these expression pedals which ensure that the pedals are compatible with different brands of controllers and keyboards. Things To Look For!Usually a sturdy and heavy box gives a solid feel and ensures that the pedal stays firmly under your foot.It also ensures that the pedal does not move while you are performing. The downsize being they would be heavy to carry around. The expression pedal also needs to be smooth to operate and should ideally cover the full midi value range (0 - 127). The values need to get from 0 to 127 in a fluid manner without being lumpy. Another useful feature that most of the expression pedals have is a spring that brings the pedal back to the normal position when you lift your foot. You can disable that feature if you don't like it and don't want to use it. 
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