The Mugig DI box takes unbalanced sound and converts it into a low balanced XLR signal for Direct Input to a mixer. The Mugig DI box, routes your signal directly to a mixer or professional audio system in a very simple and easy way. With its smart direct input it quietly transfers the sound of guitar or bass directly to your audio system. The GAIN SWITCH allows you to boost or cut the signal so you can compensate for extremely high or low-level signals. Included is a CABINET SIMULATOR SWITCH, which strengthens the sound to simulate a large 4x12" speaker cabinet when activated. The GND SWITCH breaks the ground connection between the input and output, which can be useful for eliminating hum or ground loops.