APT is over 30 years of expertise delivering exceptional audio quality on a solid, reliable platform. Hundreds of prestigious radios and broadcasters like the BBC World Service, NHK in Japan or RTL in France trust us to transport their audio streams during outdoor broadcasts or between their studio and broadcasting sites such as the Eiffel Tower.
In addition to customers in the broadcast field, we also serve the Professional Audio community and other businesses in need of a top quality broadcast solution. Our current range of IP audio codecs and our remote solution for live audio/video streaming continue to lead the field with the same level of commitment to quality, reliability and innovation we have always shown.
The highest signal fidelity, which we established from the beginning with Enhanced aptX. Protect the fidelity
of your content and avoid
listener fatigue and tune out!
As the Low-Delay Company, we have redefined transmission latency and all APT products convey this ethos. With SureStream, the Internet is evolving into a highly reliable low-delay network.
APT products save you money.
SureStream, Enhanced aptX and Composite/MPX transmission constitute an eco-system that provides highly available and high quality audio distribution outside of expensive transmission paths.
APT is specialized in the design and manufacture of low latency / high-quality Audio and Video over IP - primarily for the broadcast market. Based at our codec centre of excellence in Belfast, the team is underpinned with highly skilled and experienced designers and is supplemented by our excellent technical support, product management and sales & marketing team.
APT uses high-availability design & test and continuous improvement strategies to deliver products for 24/7 use.
"As a member of APT since 2008, I have R&D Manager responsibility for the APT range of IP codecs and transport hardware and software - managing schedules, people and resources to deliver new technology to market. Prior to APT I led a team that designed embedded systems for medical devices and have an in-depth knowledge of regulatory systems & quality control."
Deputy Group Tech Strategy
Founder of the Open Audio Network (OAN) in the 1990s and expert in WorldNet Oslo at APT, Hartmut joined WorldCast Systems in 2005. As the Audio codecs and IP network expert, he was the driving force behind the innovative APT SureStream Technology. Hartmut plays a significant role in the development of IP codecs and the alignment of sales strategy.
APT Product Manager /
IP Application Engineer
With APT since 2003, Kevin has held many sales & management roles at WorldCast. Key moments include strategic wins for APT including the nationwide APT roll out in Malaysia and the high kudos audio networking projects for the NBA and MLB in the USA. Today, Kevin contributes to the strategic direction and marketing of the APT brand and also represents the entire WorldCast portfolio.
APT Sales Director
USA, Japan, Australia and NZ
APT / WCS : 1992 to 2020
"I have 28 years experience in the Broadcasting Industry with Audio Codecs, with a wealth of experience in the following protocols i.e. x.21, ISDN, E1/T1, and now using the latest technologies IP and SureStream Technology. This has helped enhance my roll in Customer Services."
APT codecs offer the reliability, quality, and redundancy required by broadcasters for applications such as Studio-Transmitter links, studio networking and remote broadcasting/OBs. With both stereo and multi-channel audio platforms available, APT units can be deployed as a simple STL, a large-scale broadcast audio network or an audio distribution installation for commentary or in-store music.
With the new APT Mobile SureStreamer solution, we have extended our contribution/distribution expertise to include low latency, high quality video transmission from the field to the studio.
Remote studio codecs
Studio to transmitter link (STL)
Secure IP transport
AoIP - MPX/Composite - ISDN - E1T1 - Dante
Low latency remote broadcast solution for high quality audio and video streaming
Experience industry-leading reliability, connectivity, and low latency for live remote broadcasting. Compatible with most portable IP codecs, this Plug-and-Play solution makes live and local broadcasting easier than ever.