The Walrus Audio ARP-87 Multi-Function Delay is a versatile echo effect pedal for electric guitar that can be used to create both classic and spacious ambient sounds. The effect unit with digital, analogue, lo-fi and slapback offers four different sound levels with its own character. To determine the delay time of the Walrus Audio ARP-87, a tap tempo footswitch is available, at the same time the rhythm of the repetitions can be determined using the "Ratio"-knob.