Add True Bypass to 12 effects pedals Plug your chosen effect pedals into the SEND and RECEIVE sockets, then engage or disengage them using the foot-switches. When one of the loops is 'off', your guitar sound is routed directly to your amp. When it is 'on', your signal is routed through the effects pedals. Engage or disengage 12 effects pedals individually. Each loop is independent do you can have any combination active at once. All 12 pedals can be engaged at once.