The DM-2 is an easy to use three-dial analog delay pedal which was manufactured by Boss in the mid-Eighties. The three dials allow you to tweak Repeat Rate, Intensity, and Echo. The delay times range from about 33 to 330 Milliseconds so it’s ideal for anything from a quick "slapback" echo to longer repeats. If you turn the intensity knob way up, you can achieve an interesting wild echo.