The ULTRA-DI PRO DI4800A is a rack-mount, multi-channel active DI box built for larger productions that need to convert several instrument or line-level sources at once from a centralised rack location. Consolidating multiple channels into one rack unit saves space and simplifies cabling on a busy stage. The DI4800A handles serious multi-channel DI needs efficiently, converting several instrument or line-level sources from one centralised rack location instead of scattering DI boxes across the stage. Professional multipurpose 4-channel direct-injection box for stage and studio applications Provides impedance and signal matching for the direct connection of instruments to mixers and amplifiers Ultra-flat frequency response due to renowned Behringer OT-1 transformers Maximum +18dB gain boost of low level signals Ground lift switch eliminates typical ground loop problems Switchable -20dB output attenuation XLR/TRS combo connectors for high flexibility Powered via external DC power supply (included)