Second Hand The GigRig Three 2 One in Good Condition! Switch effortlessly between guitars with different levels, using the built-in preamps to balance everything as you like it The GigRig Three2One selector features three inputs. You can switch easily between 1-3 electric guitars, basses or acoustics. Or any combination! You can also use it for line-level inputs such as keyboards and drum machines. After plugging your instruments in, simply use the footswitch to cycle through them. Need more inputs? You can link 2 units together for up to 6 guitars. If you need to balance levels between differing instruments, simply select the adjacent preamp button. This engages the preamp gain controls next to the LED displays. You can then cut or boost the individual inputs to taste. The Three 2 One uses our own-design OptoKick footswitch. It’s milled from incredibly tough marine-quality stainless steel. The OptoKick footswitch uses light instead of mechanical switching. We firmly believe it’s the most reliable footswitch in the world.