The ULTRA-DI PRO DI4000 V2 direct box gives you four premium D.I. channels in a single rack space. Designed for guitars, basses, keyboards and any line-level device, each channel features XLR and 1/4" inputs with a balanced XLR output, plus a 1/4" link out to connect to your amp or monitor console. The DI4000 can even connect directly to speaker outputs up to 3,000W, converting them to pristine XLR outs.

Global Power Supply Adapts Automatically

With its internal 100–240V switch-mode power supply, the DI4000 automatically adapts to any mains voltage around the world. No need to worry about fluctuating voltages from venue to venue. The DI4000 is ready for the road.

Route Signals With Clarity and Control

The DI4000's buffered, low-impedance inputs and servo-balanced performance guarantee an ultraflat frequency response from your instruments. Its gold-plated XLR outs provide reliable, low-noise operation. You get superior D.I. sound in four channels, with exceptional versatility for routing signals. Ground lift switches per channel banish hum and noise issues.

Boost and Attenuate to Optimize Levels

With up to +20dB of gain, the DI4000 excels at strengthening weaker signals from instruments like electric guitar and bass. The -40dB input attenuation lets you tame speaker outputs without distortion. Get the perfect level for any source.

High-Cut Filter and Phase Switch Enhance Tone

An 8kHz high-cut filter per channel is ideal for smoothing out guitars and basses, removing harsh overtones. The phase reverse switch optimizes signal alignment and tone. Take your direct sound to the next level.