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Active Direc Box
Direc Box function is, to change the unbalance signal into balance. So that the signal can be sent through the bemeter-meter cable length without reducing the signal quality significantly. Therefore, the role of The Box for a live performance is needed, because for the cable used from the front of the stage to the mixer / FOH rather long, about 50 meters or less. Commonly used DI Box for instruments like guitar, bass, keyboard, synthesizer.