The Behringer Ultra-DI DI20 Professional Active 2-Channel DI-Box/Splitter is a one-of-a-kind DI (direct injection) box that can convert up to two separate unbalanced 1/4" TRS lines into two balanced XLR outputs or function as a signal splitter. Electric guitarists, keyboardists and bassists will love the flexibility this incredible box provides. Mono, Stereo or Double the Amps By flipping a switch, you can use the DI20 as a launching pad for two separate mono signals, a stereo signal or a split-signal feeding two separate amps. The DI20 also features a ground lift switch and the 3-position input attenuator can accommodate input levels of up to +48dBu. This handy built-in attenuator allows you to connect to your amplifier's speaker outputs, even amps rated as high as 3000 Watts. You can power the DI20 with either a 9V battery or your mixer's phantom power supply (+18 to +48V DC). The whole package is wrapped in an ultra compact, road-suitable and rugged metal housing. Be Direct If you are a working musician who demands uncompromising functionality and durability, the Ultra-DI DI20 will astound you and so will its very affordable price tag.