For rewiring vintage pedals or effect boxes * For Electro-Harmonix, T Rex,Retro FX, Radial Bigshot,ect effects pedals * For unbuffered bypassing/true bypass of the effect circuit without coloring the tone of the instrument or other components in the signal chain * The 9-lug switch can be used to rewire vintage pedals or effect boxes, for unbuffered bypassing/true bypass of the effect circuit without coloring the tone of the instrument or other components in the signal chain * The third pole can be wired to control an LED status light or other custom function