Behringer DI20 Ultra-DI active 2-channel DI Box features two separate unbalanced 1/4" jack inputs and two balanced XLR outputs. Behringer DI20 Ultra-DI has a 2-channel/link mode for flexible usage as mono, 2-channel or splitter box. DI-20 D.I. Box operates either by using a 9 V battery or by using 48 V phantom power.