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Instreamer Classic

General Purpose Network IP Audio Encoder.

The Instreamer makes the streaming of audio over IP networks smooth and easy. It encodes any incoming audio signal into G.711, PCM or high-quality MP3 streams and can send the stream to up to 32 different destinations across the LAN or over the internet. Instreamers support unicast, broadcast or multicast streaming along with peer-to-peer connections with other Barix devices. It can also be used for integration into wide audio infrastructures with Shoutcast, Icecast or another third party software. Simple web and command interfaces make the firmware configurable and the audio stream can be adjusted to the network bandwidth. The stream can be started/stopped in several ways (send on CTS, send on level or send always). The serial port is usable as command port or for serial network tunneling. Together with a Barix encoder device (e.g. Instreamer, Annuncicom or Exstreamer500), the firmware is an easy-to-install and cost-effective solution for professional audio streaming and can even be used for MOH solutions.



5V, max. 1A

External power adaptor, 100-240VAC, 5W, included


RJ45, 10/100Mbps auto, Link & Activity LEDs


AutoIP, SonicIP, IPZator to ease address assignment


300..230‘400 Baud asynchronous, 7/8 bit

DSub 9 pin male

serial tunnel, control and metadata input support

Audio Input

RCA connectors, unbalanced, 2 kOhm impedance

Clipping level 5.3 dBu, 4 Vpp

Frequency response (-3dB) 20..20‘000 Hz *

Signal to Noise Ratio 89dB, THD <0.03%

Stereo crosstalk -89dB

Input signal attenuable by software setting (-3..+19.5dB)

Headphone Output

3.5mm jack

volume adjustable via browser

announcement of IP address (SonicIP)

general purpose audio output, depending on used codec

Audio formats

MP3, encoding/decoding up to 192/320kbps

VBR and CBR support

PCM 16bit @8, 16, 22.05, 24, 32, 44.1, 48 kHz

G.711, uLaw, aLaw (sample rates same as PCM)


Aluminum case, 225g, separate mounting bracket

available 4.25” x 1.5” x 3.1” (108mm x 38mm x 78.7 mm)

Software Environment

Application firmware packages available from Barix

Development Environment for custom functionality
(ABCL development kit) available free of charge


(calculated according to MIL217F at 25°C)

min. 540 000h


* depends on used codec, best results @48kHz PCM

Instreamer Classic (Made in China)

2012.9121 Instreamer EU Package

2012.9123 Instreamer US Package

2012.9124 Instreamer UK Package

2012.9125 Instreamer noPSU Package


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