Professional active guitar DI box with speaker emulation developed by Juergen Rath 4 x 12". 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 3000 W. Switchable input attenuation allows input levels of up to +50 dB. Ground Lift switch eliminates typical ground loop problems. Ultra-rugged, road-suitable aluminum case. Stackable oversized rubber corners.