[Last Updated: January 6, 2024] The Attenuator When you use a volume control knob on your guitar effect pedal you are most likely using a circuit called an attenuator. An attenuator is a circuit that decreases the amplitude of a signal. Attenuators are usually built with components called potentiometers. The Potentiometer A potentiometer (or pot, … Continue reading Circuit 4 of 48: The Attenuator