The DBX Di4 is a versatile 4-channel direct injection (DI) box designed for professional audio applications, including live performance, studio recording, and stage monitoring. Perfect for converting unbalanced instrument and line-level signals into clean, balanced outputs, the Di4 ensures superior sound quality for mixers, PA systems, and recording consoles.

Beyond its DI capabilities, the Di4 doubles as a multi-channel stereo line mixer, allowing musicians to connect keyboards, samplers, and modules in a single 1/2 RU unit. Each channel offers independent volume and pan control for a custom stage mix, while the balanced XLR outputs provide clean signals for front-of-house engineers. A built-in headphone output allows monitoring without affecting the main mix.

Using the DBX Di4 as a DI Box:

  • Connect unbalanced 1/4” inputs to the front panel channel inputs.

  • Output via balanced XLR connections to your mixer or PA system.

  • 20dB pad switch reduces input level for high-output sources.

  • Ground lift switch eliminates hum caused by ground loops.

Using the DBX Di4 as a Line Mixer:

  • Mix multiple signals to a single stereo pair of RCA outputs.

  • Adjust independent channel volume and pan controls for a custom mix.

  • Master volume control for overall level.

  • Headphone output for personal monitoring.

DBX Di4 Features:

  • Four independent DI units in 1/2 RU chassis

  • Individual 20dB pad per channel

  • Independent ground lift per channel

  • Individual volume and pan controls for line mixer output

  • Master volume control

  • Headphone output for monitoring

  • Ideal for live performance, stage monitoring, and studio applications

DBX Di4 Specifications

Audio Input Connectors 1/4" TS unbalanced
Input Impedance 320k Ohms
Peak Input Level +15 dBu
Headphone Connector 1/4" Jack
Stereo Line Mixer Outputs RCA Connectors
XLR Balanced Outputs XLR Connectors
Output Impedance 600 Ohms
Max Output Level +16 dBu
Frequency Response 20 Hz–20 kHz, 0 dB to -2 dB
THD+Noise 0.0008% typical at +4dBu, 1 kHz
Interchannel Crosstalk <-90dB, 20 Hz–20 kHz
Power Supply ~ 100-120 V AC, ~ 200-240 V AC, 50-60 Hz
Power Consumption 775 mW
Dimensions 1 3/4“ (44.5 mm) x 8“ (230.6 mm) x 8 1/2“ (217 mm)
Weight Net weight approx. 3.85 lbs. (1.75 kg)

 

List price: $212.50
Price: $170.00