A delay pedal is used to create an echo effect by repeating the original sound after a short time. It works by capturing the input signal and then replaying it with adjustable delay time and feedback. The longer the delay time and the more feedback, the more pronounced the repeating echo becomes, adding depth and space to the sound.

There are different types of delay pedals, including analogue, digital, and tape delay. Analog delay provides a warmer, more natural echo, while digital delay offers clear, precise repeats and additional features like tap tempo. Tape delay mimics the sound of vintage tape machines, adding a distinctive, slightly warbled effect. Delay pedals are widely used across genres to create atmosphere, enhance solos, or add complexity to rhythms.