• Used Equipment Sales

Worldcast Systems STP00034

  • Description
  • Features

The APT MULTI-CHANNEL CODEC is a compact and efficient solution for the transport of multiple channels of audio or MPX content over IP links. It can support up to 16 channels of audio within a single unit of rackspace - and even more IP streams when using multicast or multiple unicast technology.

Dante Interface module enables direct connection to Dante or AES 67 networks.

The 1RU frame can accommodate up to 4 AoIP modules, each equivalent to a stand-alone stereo duplex codec combining audio, dual IP transport and auxiliary data on board. It offers the entire range of audio formats and modes meeting the audio industry’s requirements: simplex, duplex, AES/EBU, AES/EBU with analog backup, analog with HI/LO or 600Ω impedance.

Powerful Performance

  • Supports up to 16 channels of Audio in 1RU and even more IP streams with Multicast or Multiple Unicast   
  • Outstanding audio quality with low delay, cascade-resilient aptX Enhanced 
  • Many other standards & coding options available 
  • Robust DSP-based platform for mission-critical operation
  • Redundant Power Supplies as standard, no single point of failure
  • Hot-swappable cards enable uninterrupted audio
  • Support of Specific-Source Multicast (SSM)

Powerful Control

  • NTP System Time option for program time-alignment on multiple Decoder sites
  • User-configurable suite of audio, link, sync and PSU alarms
  • Supports the majority of protocols in compliance with Tech 3326 standard for IP compatibility
  • Support for SNMP
  • Support VLANs and virtual IP interfaces for flexible network integration
  • Network security features with firewall capability

Powerful Savings

  • Flexible & modular system that can scale according to your requirements
  • Supports up to 4 AoIP modules, each  equivalent to a stand-alone stereo duplex codec in a 1U rack space
  • SureStream Technology* for ultra-reliable delivery over affordable public IP connections
  • Seamless, affordable migration from T1/E1 to IP networks using same frame
  • Transports up to two stereo audio channels per module
  • Deliver up to 24 IP audio streams per module
  • 192/128kHz Sampling supports Digital MPX over AES and fully digital transfer*
  • Simplex and duplex operational modes
  • Optional Dante Interface enabling direct connection to Dante /AES67 network
  • Analog MPX I/O interface allows transport of two analog MPX signals or one MPX signal in duplex mode
  • Point-to-Point and Point-to-Multipoint operation
  • Content Time Alignment for Multi-Frequency FM networks utilizing NTP
  • Four Independent Clock Domains per module
  • Supports Dynamic DNS for global accessibility by hostname rather than IP address
  • Supports UPnP IGD protocol for configuration of UPnP enabled gateways (routers)
  • Forwarding of audio or non-audio (such as PAD or HD Exporter data) UDP Streams
  • Supports “Diffserv” Quality of Service (QoS) on variable DSCP values
  • Support of VLANs and virtual IP interfaces enables multi-network integration for streaming and management
  • Performance monitoring on each individual IP stream
  • User selectable packet size for each stereo audio channel
  • Configurable delay-jitter buffer for each receive IP stream (1 ms to 5000 ms)  
  • Headphone socket for audio monitoring
  • Supports APT’s award winning SureStream for high quality audio over open Internet links
  • Reliable DSP-based architecture


On 31 October 2019, the four leading broadcast and production houses Gearhouse Broadcast, Hyperactive Broadcast, Input Media and Chief Entertainment owned by Gravity Media Group started trading under the brand name of ‘Gravity Media’. All Gravity Media companies around the world are making this transition and will now go to market as a single brand with a bold new look and purpose.

under 1 roof2

Gravity Media is a leading global provider of complex live broadcast facilities and production services to content owners, creators and distributors. We use the collective pull of our people and resources to capture, craft and create world-class content that inspires and excites.

We are driven by client service excellence, and we never stand still. We’re always looking and listening, keeping up with the latest broadcast innovations – or pioneering them. Above all, we channel our energy into maintaining our reputation for flawless execution, deep technical expertise, and efficient delivery.

Gravity Media is a brand-new company with a 30-year pedigree, a force to be reckoned with formed by the coming together of Gearhouse Broadcast, HyperActive Broadcast, Input Media and Chief Entertainment. Our 500 people serve clients across the sport, media, news and entertainment industries from bases in the UK, Australia, USA, France, Germany and Qatar.

At the centre of Gravity Media lie three broad categories of expertise: media services & facilitiesproduction & content; and equipment rental & sales.

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