Your favorite multi texture reverb and your favorite multi-function delay are now available together as one. Layer lush ambient soundscapes in digital, analog, lo-fi and slap back repeats to craft a sound that is truly your own You can use it as one large pedal and go in the input of the ARP87 side and come out the output on the Slo side OR use the out from the ARP87 to go to any other pedals to put between the two and then return your signal path back into the input of the Slo. w/ Nut missing from Expression Pedal Jack