The Dispatch Master from Earthquaker Devices is a popular and versatile reverb and delay pedal all in one. It can create a delay time of up to 1.5 seconds leaving you with a feeling of playing in a deep dark cave. The sound is clear and aggressive and remains that way -- no degradation or odd effects as the sound progresses further from the 1st struck note. Both effects can run together or be parted out separately. A great combo pedal.