web streaming encoding encoder audio MPEG Layer 3, aac he-aac mp3 server standalone 1u 1ru 3u 3ru

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  AudioTX WebStream 1U

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audio encoder for web streaming - AudioTX WebStream
AudioTX WebStream hardware encoder and streaming encoder


AudioTX WebStream 1U for live web audio streaming with broadcast quality audio & transmission grade robustness.

  • A single AudioTX WebStream 1U can encode your audio in up to 6 different formats/bitrates.
  • Professional balanced Analogue and AES Digital stereo input.
  • AudioTX WebStream encodes in Professional Grade MPEG Layer 3 (MP3), MPEG4 AAC and HE-AAC.
  • When used as the streaming server, can stream up to 6 audio programmes, and can service a total of up to 5,000 clients*1.
  • You can use separate units to encode and stream (normally encoding at the studio, streaming at the ISP location).
  • Or you can encode and stream from the same unit.
  • Compatible with Shoutcast/Icecast encoders and streaming servers.
  • Incredibly flexible and cost-effective solution.

AudioTX WebStream encodes true broadcast quality audio and is a reliable, transmission grade encoding and streaming server solution for web streaming applications in radio stations.



Professional grade analogue balanced Stereo audio inputs plus AES/EBU digital audio input, external wordclock input. Audio in/out at up to 24 bit, 96 kHz sample rate.

Broadcast quality encoding using MPEG Layer 3, MPEG4 AAC & HE-AAC. Streaming server capable of serving up to 6 channels to a total of up to 5,000 clients*1. Can both encode and stream from the same unit.



Detailed specification:

MPEG4 AAC: Professional grade AAC coded audio at between 16 and 48 kHz sample rate, 16 bit, Mono, Stereo, Joint-Stereo and dual-mono modes. 24-320kbps. Provides full-bandwidth broadcast quality stereo audio at bitrates between 64kbps and 320kbps. Near transparent Stereo audio from 64kbps. 150ms delay.

(High Efficiency AAC, AACPlus):

Offering expectional audio quality at very low bitrates. HE-AAC coded audio at between 32 and 48 kHz sample rate, 16 bit, Mono, Stereo, and Parametric Stereo. 14 to 96 kbps. Provides full-bandwidth excellent quality stereo audio at bitrates between 14kbps and 96kbps. 260ms delay.
MPEG Layer 3 coded audio: Professional MPEG Layer 3 coded audio at between 16 and 48 kHz sample rate, 16 bit, Mono, Stereo, Joint-Stereo and dual-mono modes. 32-320kbps. Provides full-bandwidth broadcast quality stereo audio at bitrates between 128kbps and 384kbps. Mono audio from 64kbps. 125ms delay.
Source audio selection:

User-selectable channel inputs to each of the 6 audio encoding modules - Left channel, Right Channel, Stereo or MonoMix (Analogue and Digital inputs separately selectable).



Can be used on all private and public IP networks. 10/100 Ethernet interface.


Network mode: TCP/IP
10/100 Ethernet interface.

Audio transmit/receive bitrates:

14 to 320 kB/s per audio channel (per client).
Audio Encoding: 6 Encoder modules each able to encode in a separate audio format/bitrate combination.

Audio Streaming:

6 Streaming modules which can serve audio to, in total, up to 5,000 clients*1, and can each source audio from:
  • the internal encoders
  • an encoder in a remote AudioTX WebStream unit
  • an existing web stream
  • a Shoutcast/Icecast capable encoder
Fixed and dynamic metadata/text information for audio encoding:

Fixed metadata configured in web-browser based management interface.

Dynamic metadata can be updated for channels being encoded in 2 ways:

  • RS232 interface
  • IP text based interface

Analog audio inputs:

Stereo balanced inputs, 2x XLR (F) -18db nominal signal level. +18db at analog inputs = 0dbFS (digital full scale).
Digital audio input: AES/EBU digital input, XLR (F) Input accepts both AES/EBU and SPDIF type of signals.
Clock input: Wordclock input, BNC. System clock-source is user-selectable: internal clock, wordclock input or use clock from incoming AES/EBU source.
Metadata/text ancillary data RS232 port: RS-232 serial connection for ancillary data in and out, D-Sub 9 pin connector. Meta data updates via this port or over IP network.
Network Connection:

Neutrik Ethercon RJ45 connector, accepts standard RJ45 connector or locking Ethercon cable.


10/100 Ethernet connection for TX, RX audio and web-management interface.

AC Power:

96-264 VAC, 50-60Hz autosensing for worldwide operation.


*1 dependent on network capacity and bitrate chosen.

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Contact us:    sales@AudioTXWebStream.com    tel. +44 (0)121 256 0200 (GMT)


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