The DigitTech PDS 1002 offers you a choice of 2 sec 500msec and 125msec modes for adding the exact amount of delay. One of the two pedals on the PDS 1002 allows you to conveniently toggle through the effects. The other pedal lets you turn on and off these effects. With the five knobs available you get complete control over the sound, delay times, and number of repeats for precise echo effects.