DI4

The dbx DI4 is a professional four-channel active direct box with an integrated stereo line mixer, designed for live sound, touring, recording, and installed audio applications. It converts unbalanced instrument and line-level signals into balanced outputs while providing independent stage monitoring and front-of-house feeds. Its compact 1U rack-mount design makes it an ideal solution for keyboard rigs, samplers, and multi-instrument setups.

From The Manufacturer:

The 4-channel DI4 is designed to be used as a standard tool for many audio applications. Offering four channels, the DI4 easily solves the problem of converting unbalanced signals into balanced outputs suitable for mixers, PA systems, and recording consoles. It also functions as a multi-channel stereo line mixer, allowing keyboards, samplers, and modules to be combined into a single rack unit while supplying independent balanced XLR outputs for front-of-house and a separate monitor mix with headphone output.

Key Features:

• Four independent active DI channels

• Integrated stereo line mixer

• Balanced XLR outputs

• ¼-inch TS unbalanced inputs

• Independent 20 dB pad switch on each channel

• Independent ground lift switch per channel

• Individual volume and pan controls for line mixer

• Master volume control

• Front-panel headphone output

• 1U rack-mount design

Specifications:

• Product Type: Active 4-Channel Direct Box with Line Mixer

• Channels: 4

• Inputs: 4 × ¼-inch TS Unbalanced

• Balanced Outputs: 4 × XLR

• Stereo Mixer Outputs: RCA

• Headphone Output: ¼-inch Jack

• Input Impedance: 320 kΩ

• Output Impedance: 600 Ω

• Maximum Input Level: +15 dBu

• Maximum Output Level: +16 dBu

• Frequency Response: 20 Hz – 20 kHz (0 dB to -2 dB)

• THD+Noise: 0.0008% Typical @ +4 dBu, 1 kHz

• Interchannel Crosstalk: < -90 dB

• Power Supply: 100–240 VAC, 50/60 Hz

• Power Consumption: 775 mW

Included:

• dbx DI4 Active Direct Box

• IEC Power Cable

• User Documentation

Applications:

• Live sound reinforcement

• Keyboard rigs

• Samplers and synthesizers

• Recording studios

• Broadcast facilities

• Touring productions

• Houses of worship

• Corporate AV

Included Accessories:

• IEC power cable

• User documentation

Accessories (Not Included):

• Audio cables

• Rack mounting hardware

• Flight case

• Instrument cables

Size:

• 230.6 × 217 × 44.5 mm (W × D × H)

Weight:

• 1.75 kg

Electrical/Thermal:

• Universal Power Supply: 100–240 VAC, 50/60 Hz

• Power Consumption: 775 mW

• Active analogue circuitry

• Designed for continuous professional operation