Behringer ULTRA-DI DI20 DI BoxULTRA DI DI20 The ULTRA DI DI20 is a one of a kind DI (Direct Injection) box that can convert up to two separate, unbalanced " TRS lines into two balanced XLR outputs or function as a signal splitter. Electric guitarists, keyboardists and bassists will love the flexibility the incredible DI20 provides both in the studio and on the stage. Mono, Stereo or Double the Amps By flipping a switch, you can use the DI20 as a launching pad for two separate mono