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Active 4-Channel Direct Box That Converts Unbalanced Signals


The DBX 4-channel Di4 is designed to be used as a standard tool for many audio applications.
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The DBX 4-channel Di4 is designed to be used as a standard tool for many audio applications. Offering (4) channels, the Di4 easily solves the problem of converting unbalanced signals into balanced output suitable for use with mixers, PAs, recording consoles and more. The Di4 also functions as multi-channel stereo line mixer. This feature allows users to connect all their keyboards, samplers and modules into just one rack unit on stage and supply independent XLR balanced outputs to the stage box for a front of house engineer and set your own independent mix for stage monitoring. The Di4 also offers a headphone output.

DBX Di4 Features:

  • (4) totally independent DI box units in 1/2 RU package
  • Independent 20dB pad switch per channel
  • Independent ground (earth) lift switch per channel
  • Independent volume control per channel for line mixer output
  • Independent pan control per channel for line mixer output
  • Master volume
  • Headphone output

DBX Di4 Specifications:

  • Audio Input Connectors: 1/4" jack Type TRS balanced
  • Input Impedance: 47 k Ohms
  • Minimum Sensitivity: - 20 dB
  • Peak Input Level: + 16 dB
  • Headphone Connector: 1/4" jack
  • Stereo Line Mixer Outputs: RCA Connectors
  • Impedance: 600 Ohms
  • Max Output Level: + 2 dB (peak level + 18.5 dB)
  • XLR Balanced Outputs: XLR Connectors
  • Minimum Output Impedance: 600 Ohms
  • Maximum Output Level: 0 dB (peak level + 18.5 dB)
  • Frequency Response: 20 Hz ~ 20 kHz, 0 dB ~ -2 B
  • Distortion: 0.02%
  • Signal to Noise Ratio: better than 74 dB
  • Crosstalk: > 80 dB @ 1 kHz; -20 dB input
  • Power Supply: ~ 100 - 120 V AC, ~ 200 - 240 V AC, 50- 60 Hz
  • Power Consumption: 11.5 VA
  • Fuse: 100-120 V AC: 630 mA (slow-blow) 200-220 V AC:315 mA (slow-blow)
  • Dimensions: 1 3/4" x 8" x 8 1/2“ (44.5 x 230.6 x 217mm)
  • Weight: Net weight approximately 3.85 lbs. (1.75 kg)

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