Behringer DI4000 4-Channel Active DI-Box
The ULTRA DI DI4000provides four active direct box channels in a single rack space enclosure. Unlike a passive DI where the frequency response of the signal can be altered depending on the connected impedance, an active DI buffers the input signal with an amplifier. This assures that the sound source will reach the mixer balanced and noise-free.

The input-buffering amplifier also ensures clean, pure and powerful sound when using extremely long cables. The ULTRA DI DI4000 features Behringer’s OT-1 output transformer and the unit features a low pass filter and phase reverse and ground lift switches on every channel.

Features
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
Allows direct connection to speaker outputs with up to 3,000 Watts
+20 dB gain switch for preamplification of low-level signals
Switchable input attenuation allows input levels of up to +40 dB
Phase Reverse switch allows you to instantly correct phase problems
Switchable High-cut filter (8 kHz) for guitar applications
Ground Lift switch eliminates typical ground loop problems
Accurate 8-segment LED level meter for optimum performance
1/4″ TRS and gold-plated XLR connectors
Illuminated switches enable perfect operation in dark stage environments
Designed and engineered in Germany

Specifications
Input Connections 4 x 1/4″ TS phone (unbalanced)
4 x XLR (unbalanced)
Output Connectors 4 x XLR
4 x 1/4″ TS phone (link out)
Input Level +20/+40/+60dBu
Output Level +20dBu
Frequency Response 23Hz to 120kHz, +/-3dB (100 kOhm)
Noise -95dBu
Power Standard IEC receptacle
Dimensions (WxDxH) 19″ x 8″ 1/2″ x 1 3/4″
Weight 5.5 lbs
Specialties Link output is an unbalanced parallel output that can feed a signal into a backline or monitor amplifier