+An **effects pedal** is an electronic device that modifies an [Audio Signal](/wiki/audio_signal), altering the sound of a musical instrument. From subtle shimmer to wild distortion, these small boxes expand a musician's sonic palette and [Musical Expression](/wiki/musical_expression).
+## See also
+- [Guitar](/wiki/guitar)
+- [Amplifier](/wiki/amplifier)
+- [Distortion](/wiki/distortion)
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