Behringer ULTRA-DI DI400P High-Performance Passive DI Box

Make your instrument signal board-ready with the Behringer ULTRA-DI DI400P, a rugged, road-tested passive DI box engineered for stage and studio applications. Its ultra-flat frequency response—courtesy of the high-performance Behringer OT-2 transformer—ensures your guitar, bass, keyboard or speaker output remains true to the source, even over long cable runs. Plug your instrument into the ¼″ TS input and route an unaltered feed to your onstage amp via the parallel Thru/Out jack, while the balanced XLR output provides noise-free, mic-level audio to your mixer. A ground-lift switch eliminates hum from ground loops, making the DI400P an indispensable tool for any gig.2

Key Features

• Passive Impedance Matching: Ensures seamless instrument-to-mixer connectivity without tone coloration

• Behringer OT-2 Transformer: Delivers ultra-flat frequency response and superior isolation from AC/RF hum2

• Parallel ¼″ TS I/O: ¼″ Input and Thru/Out jacks let you feed both your amp and console simultaneously

• Balanced XLR Output: Provides a clean, mic-level signal for long cable runs with minimal noise

• Ground Lift Switch: Eliminates ground-loop hum for pristine live and studio sound

• High-Power Handling: Capable of accepting up to 3,000 W speaker-level inputs for direct amp connections

• Compact, Rugged Chassis: All-metal housing built to endure touring and frequent setup/teardown

Technical Specifications

• Inputs: 1 × ¼″ TS (parallel In/Thru)

• Outputs: 1 × Balanced XLR

• Frequency Response: 20 Hz – 20 kHz (±0.5 dB)

• Maximum Input Power: 3,000 W

• Dimensions (H × W × D): 65 × 119 × 36 mm

• Weight: Approximately 200 g (0.44 lb)