Attero Tech unD4I-L
4-Channel Dante Input Interface with I/O


The Attero Tech unD4I-L four input Dante interface allows you to add mic/line inputs to a Dante system. The addition of four logic inputs and four logic outputs allows easy interface with microphone switches and indicator LEDs. The unD4I-L features four balanced mic/line inputs, each with software selectable +48V phantom power and 8 gain levels.

Front panel indicators show each channel's gain and phantom power status for easy troubleshooting. The unD4I-L has two network connections to allow Dante Daisy Chaining, which further simplifies system infrastructure wiring by allowing multiple unD4I-Ls to use a single Cat5 home run connection to a network switch. Power can also be daisy chained. The unD4I-L is powered by either external +24VDC or any PoE network switch. All adjustable parameters, like mic/line gain and phantom power, are software controlled.

Attero Tech unD4I-L Specifications:

  • Analog inputs:
    • Type: Balanced and RF filtered 3-pin depluggable
    • Mic/Line Gains: -12dB, 0dB, 3dB, 15dB, 18dB, 30dB, 33dB, 45dB
    • Impedence: >1.8K ohms at any gain setting
    • Phantom Power: +48V, software selectable
    • EIN (Mic mode): -115dBu (+45dB gain)
    • Maximum Input Levels:
      • +8dBu @ 0dB gain
      • -7dBu @ +15dB gain
      • -22dBu @ +30dB gain
      • -37dBu @ +45dB gain
        With +12dB pad enabled, max input levels are 12 dB higher
  • Frequency Response: +/- 1dB, 20 Hz - 20 kHz
  • System THD: <.01% at any gain
  • Logic inputs: 0-3.3VDC input range, can indicate both hi/low and analog range
  • Logic outputs: 25mA source current @ 5VDC, 50mA sink current from up to 24VDC
  • Power Supply: 24V DC wall wart or PoE
  • PoE Class: Class 0 802.3af PoE PD compliant
  • Power Consumption: Less than 4W
  • Dimensions: 8.32" W x 1.50" H x 4.74" D
  • Certifications:
    • FCC CFR 47 Part 15 Class A
    • CE (EN55022 Class A)
  • Operating Temperature: 0° C - 40° C

WARNING: Cancer and Reproductive Harm -

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