Behringer ULTRA-DI PRO DI4800A 4-Channel Active Direct Box

The ULTRA-DI PRO brings exceptional direct signal transfer in a compact 4-channel unit. Housed in a single rack space, the DI4800A gives you four independent channels, each equipped with XLR and 1/4″ inputs and dual XLR outputs—allowing you to connect up to four instruments while maintaining signal integrity. For guitarists, bassists and keyboardists needing multiple D.I. channels, the DI4800A delivers exceptional sound quality and flexibility at an extremely affordable price.

Accommodate Any Input Signal With Gain and Attenuation

The ULTRA-DI PRO is equipped to handle the widest range of signal levels, from passive instrument pickups to line-level synths and keyboards. Each channel provides up to +18dB of gain boost—with +6, +12 and +18dB settings—to amplify signals from low-output sources. A -20dB pad attenuates hot signals, preventing overload distortion. With this versatile gain structure, you can plug in any instrument and optimize levels for noise-free signal transfer.

Reliable Signal Transfer With Dual XLR Outputs

Every channel of the ULTRA-DI PRO DI4800A provides two balanced XLR outputs—allowing you to feed the stage amps and monitors simultaneously. The front and rear outputs are wired in parallel, maintaining your signal’s integrity over long cable runs to eliminate noise and interference. Gold-plated XLR connectors provide optimal connectivity for noise-free operation. Whether you need to send your instrument signal to front-of-house and monitors or interface with recording equipment, the ULTRA-DI PRO DI4800A’s dual outs give you flexible signal routing options.

Defeat Ground Loops With Individual Lift Switches

Each channel of the ULTRA-DI PRO DI4800A has its own ground lift switch, letting you break ground loops that cause annoying hum and buzz. When multiple pieces of grounded equipment are connected, ground loops can introduce noise into your signal path. The ULTRA-DI PRO DI4800A’s ground lift switches allow you to isolate each channel, removing any unwanted noise while maintaining proper grounding for safety. This ensures your direct signal stays free of hum and interference.

Maintain Exceptional Signal Quality With OT-1 Transformers

At the core of the ULTRA-DI PRO DI4800A are OT-1 output transformers, providing the transparency and power you need for noise-free signal transfer. These high-quality transformers prevent impedance mismatches and maintain your instrument’s natural tone, delivering a clean DI signal to your mixing console, recorder or PA system. Whether you need to drive long cable runs on stage or send pristine tracks to your DAW, the ULTRA-DI PRO DI4800A’s OT-1 transformers capture all the subtle nuances and dynamics of your playing.