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Sonifex AVN-TB20AD 20 Button Advanced Talkback Intercom - AoIP Desktop Portal AVN-TB20AD


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Product Description

Sonifex AVN-TB20AD 20 Button Advanced Talkback Intercom - AoIP Desktop Portal AVN-TB20AD

The Sonifex AVN-TB20AD is a desktop version of the rack mounted AVN-TB20AR. The AVN-TB20AD is an advanced talkback, listening or paging intercom and AoIP that lets you communicate from one side of your facility to the other. OB truck to Control Room, stage communication, studio to studio the AVN-TB20AD covers you featuring 20 illuminated key cap talk buttons and dedicated listen and page buttons with group talk facilities as well. A phone button allows remote dialing and control of external telephone hybrids, a GPI/O button triggers external events and a front panel display provides source and destination information.

The AVN-TB20AD talkback unit has a built-in web server making set-up and configuration easy. The web-server is responsive and re-sizes images to fit your screen, broadcast monitor to smartphone! Active advanced echo cancellation and mic AGC help avoid acoustic feedback issues, dual AC and DC power inputs provide flexibility, there's even +48 volt Phantom Power for your mics.


  • 20 illuminated key-cap Talk buttons plus Listen & Page buttons
  • Phone button for remote dialling and control of an external telephone hybrid
  • Page button and Group Talk facilities
  • Callback button with callback source display
  • Three user definable buttons
  • Speaker & microphone mute buttons
  • Mic & headset inputs, headphone & speaker outputs
  • Front panel volume control which operates on speaker/headphone outputs and incoming source levels
  • +48V phantom power for the mic inputs
  • Ethernet webserver and front panel control & configuration
  • Front panel display providing source & destination information
  • Sources from AoIP, 1 x balanced, 2 x unbalanced or S/PDIF digital input.
  • Destinations to AoIP or rear panel balanced & unbalanced outputs
  • Advanced echo cancellation & mic AGC to prevent acoustic feedback
  • Dual 1Gb lan ports & 1Gb SFP fibre port
  • 10 user assignable GPIO ports
  • GPIO button for triggering external events, via physical GPIO or network commands
  • Front panel LEDs for network audio presence, Talk activity, AGC activity, clock sync and power supply activity
  • Two front panel monitor buttons for routing audio directly to the speaker e.g. to take an IFB feed or off-air transmission signal
  • Ducking or mixing of inputs to speaker/headphones
  • Dual AC & DC power supply inputs


  • Device Discovery: Bonjour (mDNS / DNS-SD) & SAP
  • Audio Delivery: RTP/UDP over IPv4 multicast
  • QoS: DiffServ
  • Stream Management: RTSP/SDP
  • Control:\ Ember+/webserver
  • Format: Linear PCM 24-bit (L24)
  • Channels Per Stream: 2
  • Frames Per Packet: 48
  • Maximum Streams: RX 25, TX 5 (fixed)
  • Sample Rate: 48 kHz

    Microphone and Headset Input
  • Input Impedance: >2.5k ? balanced
  • Gain Range: 0dB to +60dB
  • 0dBFS Line-Up: Adjustable in steps of 3dB from -58dBu to +2dBu
  • Frequency Response: 20Hz to 20kHz, +0/-0.2dB
  • Noise: -127dBu, 20kHz BW, Rs=200 ? ref. 76dB gain

  • Unbalanced Line Inputs
  • Input Impedance: >20k ?
  • 0dBFS Line-Up: +12dBu
  • Frequency Response: 20Hz to 20kHz, +0/-0.2dB
  • THD+N: <-97dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
  • Noise: -100dBFS, 20kHz BW, Rs=200 ?
  • Crosstalk: <-97dB

  • Balanced Line Inputs
  • Input Impedance: >20k ? balanced
  • 0dBFS Line-Up: Adjustable +15/+18/+20/+22/ +24dBu
  • Frequency Response: 20Hz to 20kHz, +0/-0.2dB
  • THD+N: <-110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
  • Noise: -110dBFS, 20kHz BW, Rs=200 ?
  • Crosstalk: <-100dB
  • Common Mode Rejection: >70dB @ 1kHz

  • Headphone Output
  • Output Impedance: Drives 150mW into 32

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