Featuring A.S.P. (Advanced Signal Processing) technology, the DE-1 offers two fully independent effects processors of the quality demanded by the world’s top producers and recording artists, in an easy to use, affordable package. The DE-1 can be used in one of two modes. With dual mode, two mono source inputs can be processed and each output in stereo. With single mode, a stereo source input can be processed and output in stereo.