The Boss DD-7 is a digital delay pedal designed for guitarists and musicians seeking high-quality sound effects. It offers a range of delay times from 1 ms to 800 ms, allowing for various echo effects. The pedal features multiple modes, including analog delay simulation and a hold function for looping sounds. Equipped with a built-in tap tempo feature, the DD-7 allows users to synchronize delay times with the tempo of their music. It also includes an external expression pedal input for real-time control over delay parameters. The compact design makes it easy to integrate into any pedalboard setup.