Professional and multi-purpose 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. Total of +18 dB gain boost in three +6 dB increments for pre-amplification of low-level signals. Ground Lift switch eliminates typical ground loop problems. Switchable -20 dB output attenuation. Neutrik* combo and gold-plated XLR connectors.