This is a 3-loop true-bypass loop switcher for guitar pedal boards. Handwired here in Tucson. This pedal acts as a traffic controller for your other pedals: pedals can then be plugged into the individual A, B, and C jacks on the top. When a loop is turned off, those pedals are completely removed from your signal chain, preserving your guitar's pure, unaffected tone. You can leave multiple pedals turned "on" inside a single loop (for example, a chorus and a delay in Loop B) and activate or deactivate both of them simultaneously with just one tap of the foot-switch. It is great for essentially having three different pedal boards within your single pedal board. $55