Cedar Audio CSS-1500 and CSS-3000 Surveillance Systems

Portable audio surveillance solutions for police, security and anti-terrorism forces.

Designed for audio surveillance, these allow field operatives to plug the system in and start listening even if they have miminal experience with audio equipment. Based on our DNS dialogue noise suppressors, CSS systems include ADA converters and HDA headphone distribution amplifiers, and are supplied in their own rugged cases complete with high quality headphones and all cables ready for use.

Police, security and anti-terrorism forces involved in covert audio surveillance require systems that are rugged, simple to configure, quick to set up, and easy to use.

CEDAR's new CSS-series surveillance systems satisfy all of these requirements, allowing field operatives to monitor feeds, reduce noise and improve listenability in often difficult conditions. With the company's acclaimed dialogue noise suppressors at their cores, they reduce background noise including traffic, wind and rain, reduce the level of unwanted interference such as air conditioning noise, and reduce reverberation to make audio signals clearer and more listenable.

Both models are supplied in rugged flightcases designed and built specifically for the task. Everything is pre-configured, so you need only remove the lid, plug in the power and plug in the audio feed, and the unit is ready for immediate use.

Uses for both models include:

  • improving signal quality at live listening posts
  • increasing the chance of successful terrorism counter-measures
  • aiding in hostage negotiations
  • making transcription easier and more accurate
  • rescuing interview tapes so that there is no need to re-interview nervous or vulnerable witnesses
  • enhancing interviews and other audio for court room presentation



Based upon CEDAR's acclaimed DNS1500 dialogue noise suppressor, the CSS-1500 contains a CEDAR ADA analogue/digital converter, a CEDAR HDA 6-channel digital headphone amplifier, and two pairs of high quality closed-back headphones. With just a single mains lead, everything pre-wired for immediate use, and additional audio outputs for a surveillance recorder, it contains everything necessary to monitor a microphone or probe in real-time, to reduce background noise for improved listenability, and to allow users to attach recorders for future laboratory investigation and court use of the audio.


The CSS-3000 is identical to the CSS-1500 except that a CEDAR DNS3000 lies at its heart. With scene memories and sophisticated timecode facilities, this allows users to create pre-configured setups for specific listening environments and, for sophisticated audio/video installations, its operation can also be synchronised with video surveillance.