Behringer echo machine em600 stompbox behringer em600 p behringer s echo machine em600 gives you 11 delays in one pedal delay is a synthetic echo which in adjustable increments repeats the notes you play on guitar each repeated tone becomes quieter than the previous one until the repeats are no longer heard p p behringer s real sound modelling rsm technology gives this pedal the ability to emulate the acoustics of a variety of environments so you can produce realisti