AVN-DIO03 Dante to Headphone Outputs (1/4" & 3.5mm Jacks) With Volume Control & Limiter

Sonifex Ltd.

The AVN-DIO03 is Dante AoIP network-to-headphones convertor in the Sonifex DIO range of Dante input/output devices. It features a single stereo headphone output available on two connections for 1/4″ and 3.5mm jacks and a volume control for headphones level. A limiter with threshold setting and LED indication can be switched in to prevent over-shooting and protect hearing.

The front panel potentiometer adjusts headphone volume from mute (fully anticlockwise) to +6dB of gain when fully clockwise. This is useful if the Dante stream level is low and requires boosting.

A simple headphone limiter is included to prevent hearing damage by limiting the audio level sent to the headphones. The limit level can be set using a trimmer adjustment tool, or small flat blade screwdriver, between approximately -12dBu (fully anticlockwise) and 0dBu (fully clockwise).

When limiting, the blue limit LED illuminates. This should prompt you to turn the headphone volume down until the blue LED extinguishes, as audio quality will be reduced whilst the limiter is active.

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.

The A/D and D/A circuitry offers 120dB of dynamic range – ten times better than similar competing products. 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.

* Note: Because the headphone output of this device is unbalanced, performance is 6dB lower than for balanced AVN-DIO products.

  • 1/4-inch and 3.5mm jack analogue headphone outputs.
  • Headphones volume control.
  • Limiter on/off, threshold control and LED indicator.
  • Neutrik EtherCon® Ethernet connection.
  • Fully Dante compliant device.
  • AES 67 compatible.
  • Ultra-high quality, wide dynamic range D/A conversion.
  • Powered via PoE (Power over Ethernet).

More at: https://www.sonifex.co.uk/avn/avn-dio03.shtml

Product Specs

Headphone Jack Output Pin-out


Tip: Left

Ring: Right

Scree:  0V Common


Headphone Output – Jack

Parameter Description

Output Impedance: Capable of driving 150mW into 32Ω to 600Ω headphones

Maximum Output Level: +16dBu

D to A Line-Up: -6dBFS = +16dBu (max volume)

Gain: Mute (min Volume) to +6dB (max volume)

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

THD+N: <0.05%, -14dBFS input, max volume, 20Hz to 20kHz, 20kHz BW

Dynamic Range: 114dBu, 20kHz BW, 0dB gain


Audio Limiter Range: -12dBu to 0dBu



Parameter Description

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

Encoding:PCM 16, PCM 24, PCM 32


PoE Power

Standard:802.3at 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-DIO03: Dante® to Headphone Output


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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