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Multicoder M400

Low-latency Audio over IP Encoder that can do AAC+ and OPUS with latest Security

The Barix Multicoder M400 boasts up to four internal encoding engines, capable of simultaneous operation, each supporting various audio formats.With support for streaming protocols RTP and BRTP, it can achieve exceptionally low latency. This device can encode incoming audio from connected analog sources into formats like OPUS, AAC+. The Multicoder M400 is purpose-built for low-latency applications and leverages a new Linux-based platform to provide robust security features, including HTTPS for the setup of the device.



Power Supply Input

  • External power adaptor, 100-240VAC, 10W
  • Male barrel connector: 5,5 x 2,1 mm

Ethernet Interfaces

  • RJ45, 10/100 auto detect, IPv4, IPv6

Audio Input

  • Stereo RCA / cinch connectors (also mono configurable)
    2kΩ input impedance 3.9 Vpp max, adjustable in sensitivity
  • Dynamic range 87 dB, SNR -87 dB control and metadata input support

Audio formats

  • OPUS, AAC+ (AAC-HC and AAC-LC)
  • MP3
  • PCM
  • G.711
  • Sample rates: 8/16/22.05/24/32/44.1/48Khz
  • Supported bit rates: 32kb/s to 320 kb/s

Network Protocols

  • Set-up: HTTP/HTTPS
  • Streaming: RTP, BRTP (requested RTP)

Headphone output

  • Female Jack 3.5 mm


  • 2 extension ports for USB devices (for future use)


  • DB-9, currently not in use

HW/SW environment

  • Barix IPAM400 Processor Module
  • Linux with dual boot recovery and remote firmware update capability

User Interface

  • Network interface for control, status and setup
  • HW reset button, LED for status

Case & Weight

  • Aluminum
  • 108x38x78,7mm (4,25×1.5 x3.1 inch)
  • Weight 250g


  • >199.951h / 22 years


  • two years

Multicoder M400 (Made in Europe)

2023.9434P Multicoder M400 EU Package

2023.9435P Multicoder M400 US Package

2023.9436P Multicoder M400 UK Package

2023.9437P Multicoder M400 NoPSU Package


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