BOSS Direct Box DI-1

An active direct box that converts unbalanced phone types such as the output from electronic musical instruments into low impedance balanced XLR types compatible with mixer input. Built-in automatic power off and phantom power switching functions. Equipped with a 3-stage attenuator switch, suitable for a wide range of applications. You can also connect the speaker output of a guitar amp, etc. Since it is a ground-guaranteed direct box, it will operate normally even if you short the balance out pins 1 and 2 (or pin 3). Since it is a ground-guaranteed direct box, it will operate normally even if you short the balance out pins 1 and 2 (or pin 3).