More than just a DI. The dbx DI4 Active DI Box gives you four channels of high-quality DI capabilities with the added bonus of being able to function as a stereo line mixer. Each DI channel is equipped with independent 1/4 TS jack inputs as well as handy attenuation and ground lift switches. Your unbalanced signal is then converted providing you with a balanced output from the rear XLR connectors for use with mixers PA systems consoles and more. Each channel also has two extra controls. Knobs for Level and Pan enable you to mix your four signals and send a summed version to your desired location from the RCA Aux Out on the rear panel. This is perfect for creating your own independent monitor mix. The DI4s DI and line mixing capabilities can be used simultaneously providing you with plenty of options from a single rugged 1/2 RU enclosure.