PROGLOOPER is probably the world’s most flexible non-custom Bypass Looper. It is a unique device giving you almost total control over complex combinations of effects and amp channel switching. Allows activatin pre-programmed signal paths through a series of effects with a single stomp. Unlike other devices, the WOBO PROGLOOPER uses relays instead of switches. Most switch based bypass and routing devices use components that are simply NOT DESIGNED for switching audio signals. The relays used in the WOBO unit have been specially designed for switching high-quality audio signals so that there is absolutely no impact on your sound. Using the WOBO PROGLOOPER, it is possible to connect four effects or sets of effects (i.e., four loops called A, B, C and D). The loops are divided into two sections each having an input and output, the first section has loop A and the second has loops B, C and D.