Professional and multi-purpose 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 transformer. Internal battery automatically shuts off when phantom power is applied Allows direct connection to speaker outputs with up to 3,000 Watts. Switchable input attenuation allows input levels of up to +50 dB. Ground Lift switch eliminates typical ground loop problems. TRS and gold-plated XLR connectors, Ultra-rugged, road-suitable aluminum case, Stackable oversized rubber corners. High-quality components and exceptionally rugged construction ensure long life and durability.