ULTRA-DI DI20 The ULTRA-DI DI20 is a one-of-a-kind DI (Direct Injection) box that can convert up to two separate, unbalanced ¼ " 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 signals, a stereo signal – or a split-signal feeding two separate amps. The DI20 also features a superb ground-lift switch, and the 3-position input attenuator can accommodate input levels of up to +48 dBu. This handy built-in attenuator also allows you to connect directly to your amplifier’s speaker outputs, even amps rated as high as 3,000 Watts. You can power the DI20 with either a 9 V battery or your mixer’s phantom power supply (+18 to +48 V DC). The whole package is wrapped in an ultra compact, road-suitable and rugged metal housing.