Monoprice DI Mini Pedal This DI box takes a high-impedance, unbalanced 1/4" signal and converts it into a low-impedance, balanced XLR signal for Direct Input to a mixer. Allows you to send the signal over much longer cable runs with significantly less signal loss than you could otherwise. This active DI box a signal gain switch, which allows you to optionally boost or cut the signal by 20dB, so you can compensate for extremely high-level (hot) or low-level signals. Additionally, it includes a cabinet simulator switch, which when activated fattens up the sound to simulate the sound of a large 4x12" speaker cabinet. In addition to converting the signal, the pedal includes a true bypass output, so you can continue to connect to your amplifier. A ground lift button breaks the ground connection between the input and output, which can be useful for eliminating hum or ground loops. This pedal is powered using a 9V AC power adapter with a negative tip, such our 9V Power Supply for Guitar Pedals (PID 611600).