PSP EchoPSP Echo is a high quality echo processor. PSP Echos powerful and unusual features combined with its smooth operation makes it ideal for all kinds of creative uses from simple slap back and sustain effects to ping pong delays and spacious echoes. The delay sliders can be used to add special tape echo effects for even more unique sonic possibilities. The tape "wow" control and built in ducker further extend the creative potential of PSP Echo.