NMX-ATC-N4321 Audio Transceiver
Discontinued

Audio over IP Transceiver

Nmx Atc N4321 Front Straight On
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The NMX-ATC-N4321 Audio Transceiver is an audio-over-IP solution that both sends and receives two-channel balanced or unbalanced audio over IP. Simply connect a balanced audio input into the IN port and it's converted to IP packets that are switchable and routable just like data or voice. The balanced audio output receives an audio-over-IP stream and decodes to analog while preserving audio fidelity. Perfect for point-to-point or point-to-multi-point audio delivery, the NMX-ATC-N4321 provides audio matrix switching and distribution using the same control options as SVSI's Networked AV video switching and distribution solution.

With two auto-sensing gigabit Ethernet ports, units can be stacked to deliver low-latency multi-channel audio over a house network or a physically separate network. One Ethernet port is POE for use with a POE switch, eliminating the need for an external power supply. An audio matrix with any number of inputs and outputs can be constructed with the NMX-ATC-N4321. Since control is the same as for SVSI's video over IP matrix, video and audio matrices can be combined and routed using the same controller for the ultimate in digital media distribution.

Downloads

Documents
  Size Uploaded
file type icon Data Sheet
updated: Apr 2026
489 KB Apr 2026
Manuals
  Size Uploaded
250 KB Oct 2020
1.05 MB Oct 2020
Brochures
  Language Size Uploaded
file type icon Pro Install Overview Brochure
en updated: Oct 2023
en  23.1 MB Oct 2023
Bim Objects
  Size Uploaded
file type icon NMX-ATC-N4321 - BIM Object
updated: Aug 2019
Aug 2019
Software
  Version Size Uploaded
MacOS download icon SVSI N-Able Mac
version 5.2.2, released: Apr 2025
5.2.2   219 MB Apr 2025
Windows download icon SVSI N-Able PC
version 5.2.2, released: Apr 2025
5.2.2   116 MB Apr 2025
Firmware
  Version Size Uploaded
download icon for SVSI N4000 Audio over IP Transceiver Firmware Updater SVSI N4000 Audio over IP Transceiver Firmware Updater
version 1.0.4, released: Nov 2021
1.0.4   61.4 MB Nov 2021
Quick Start Guides
  Size Uploaded
638 KB Oct 2020
Product Guides
  Version Size Uploaded
file type icon NET-SVSI-MIB.txt
updated: Aug 2021
  94.5 KB Aug 2021
file type icon N-Series Stream Compatibility
updated: Jun 2024
  431 KB Jun 2024
201 KB Oct 2025
Install Guides
  Size Uploaded
1.17 MB Jun 2024

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Specifications

Dimensions (HWD) 1.05" x 7.888" x 5" (2.67 cm x 20.04 cm x 12.7 cm)
Audio Inputs 2-channel user selectable balanced or unbalanced audio
Audio Outputs 2-channel balanced audio (1x 5-pin phoenix connector), 2-channel unbalanced audio (headphone jack)
Communications Ethernet: Multi-cast, unicast, IGMP v3, IPv6, layer-2 and layer-3 switch compatible.
Front Panel Components Reset button, ID button, Power LED, Status LED. See Data Sheet for details.
Rear Panel Components 12 Volt DC power input; POE, 8-wire RJ45 female; 10/100/1000 Mbps 10/100/1000Base-T auto-sensing gigabit Ethernet switch port. See Data Sheet for details.
FG Numbers FGN4321-SA
HARMAN Professional Solutions: