AVN-DIO09 Microphone Input to Dante®

Sonifex Ltd.

The AVN-DIO09 is a Microphone input to Dante converter in the Sonifex DIO range of Dante input/output devices with A/D circuitry offering a world-class E.I.N. of 129dB. It features a single high quality mic preamp with balanced XLR input, coarse and fine gain controls, high pass filter, phantom power, tri-color level LED  and one Neutrik EtherCon® connector for direct connection to a Dante AoIP network.

All Sonifex DIO interfaces provide a simple, convenient, and elegant plug and play method of connecting legacy analogue and digital audio equipment to the Dante AoIP audio network.

All DIO products use Dante Controller for configuration and are powered by PoE (Power over Ethernet). They use rugged aluminium boxes with side slots for screw-mounting and contain superior audio circuitry for optimal audio performance. All feature rugged Neutrik EtherCon® connectors and Neutrik lockable audio connectors for ultra-reliable connectivity.

The AVN-DIO09 has coarse and fine mic gain with the coarse gain set using a toggle switch, providing 20dB/50dB of gain, and the fine gain set using a trimmer adjustment tool, or small flat blade screwdriver, adding between 0dB and 36dB of additional gain. An on/off toggle switch turns the high pass filter on or off and when enabled, it acts on frequencies below 125Hz at a rolloff of 6dB/octave.

Phantom power is enabled/disabled via a toggle switch on the front panel and when enabled, a 48V DC supply is provided to power an appropriate microphone. A red LED illuminates to show when phantom is enabled.

A front panel audio level LED helps to set the gain and shows the audio level being sent to the Dante network.

Note: If using a phantom powered microphone, it may be necessary to earth the unit using the rear panel earth tag to eliminate mains hum, depending on the nature of your PoE supply.

  • 1 x balanced microphone input on XLR socket with latch lock.
  • Neutrik EtherCon® Ethernet connection.
  • Single turn pot setting fine mic gain (0dB – 36dB).
  • Coarse mic gain switch (+20db/+50dB).
  • High pass filter on/off switch.
  • Phantom power on/off switch.
  • Phantom power LED indicator.
  • Level LED indicator.
  • Fully Dante compliant device.
  • AES67 compatible.
  • Dante Domain Manager compliant.
  • Ultra-high quality, wide dynamic range A/D conversion.
  • Powered via PoE (Power over Ethernet).

More at: https://www.sonifex.co.uk/avn/avn-dio09.shtml

Product Specs

Microphone XLR Input Pin-out


1Chassis Ground  

2Input Phase  

3Input Non Phase  


Earthing Point

Single earth tag.  


Level LED Thresholds

Off: Level is under -38dBFS (-20dBu)

Green: Level is between -38dBFS (-20dBu) and -18dBFS (0dBu)

Amber: Level is between -18dBFS (0dBu) and -10dBFS (+8dBu)

Red: Level is above -10dBFS (+8dBu).


Microphone Input – XLR

Parameter Description

Input Impedance: 2.2kΩ balanced

Maximum Input Level: -68dBu (max gain) to -8dBu (min gain)

Gain: Adjustable 20dB to 86dB

Frequency Response: 20Hz to 20kHz, +0/-0.5dB (ref 1kHz)

High Pass Filter Response: Fc = 125Hz @ 6dB per octave

THD+N: <0.01%, -32dBu input, 40dB gain, 20Hz to 20kHz, 20kHz BW

E.I.N.: 129dBu, 20kHz BW, max gain, Rs=200Ω

Common Mode Rejection: >60dB @ 1kHz

Phantom Power: +48V ± 4V



Parameter Description

Sample Rates: 44.1kHz, 48kHz, 88.2kHz, 96kHz

Encoding:PCM 16, PCM 24, PCM 32


PoE Power

Standard802.3at Type 1

Class: 0

PD Power Range: 0.44 W to 12.94 W

Typical PSE Power Usage: 4 W

Max PSE Power Usage: 15.4 W


Equipment Type

AVN-DIO09: Microphone Input to Dante®


Physical Specification

Dimensions (Raw): 10.6cm (W) x 7.3cm (D) x 4.3cm (H)

4.2” (W) x 2.9” (D) x 1.7” (H)

Dimensions (Boxed): 17.4cm (W) x 9.5cm (D) x 5.6cm (H)

6.9” (W) x 3.7” (D) x 2.2” (H)

Weight:Nett: 0.2kg Gross: 0.3kg

Nett: 0.44lbs Gross: 0.66lbs

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