Where Opus Technologies designs and manufactures in France the most compact class D loop amplifier series, offering the best performance on the international market.

Our exclusive technology provides hearing-impaired people with improved sound quality in public places such as theaters, conference rooms or reception counters.

To ensure our partners are monitored and to maximize the number of installations that comply with the requirements of IEC-60118-4, we provide permanent support to all our dealers. We provide customized case studies, technical training, but also a custom design of Class D amplification products.

Our 10 years of experience in electronic and audio development allow us to combine in-depth knowledge in class D amplification technology with  mastering the reality in the world of AV installation.

As a member of the IHLMA (Hearing Loop Manufacturers Association), we maintain a dialogue with our colleagues in the industry to develop the market and the standards that govern it.

The quality of audio processing is at the heart of the design process of our amplifiers. Our systems incorporate a compressor to eliminate clipping, TO limit and avoid audio signal distortion, to provide optimal comfort for people who are hard of hearing. This treatment grants users with exceptional clarity.

We maintain close links with end users via the hearing impaired associations in order to guarantee products that combine reliability, simplicity and quality of listening without fault.

Your satisfaction is out priority. We will be always avaible to advise you and to bring you our expertise.
Our systems are developped with strict and rigorous specifications, and proven technology associated with quality of manufacturing allow us to offer you a 5 year manufacturer warranty.


We believe in market developments and we make progress every day in the development of projects to bring you new solutions, always with this idea in mind: reliability, simplicity and listening quality as priority.

Our participations in national and international fairs allows us to be at the customer’s beside, which impulse us to innovate.

Why choose Opus Technologies?

Opus Technologies offers a wide range of utra compact and efficient loop amplifiers, guarenteeing a targeted, judicious and qualitave response while optimizing budget costs.

We put our expetise and our experience at your service to assist you in your projects.

In fact, the installation of a magnetic loop require taking into account many factors, such as:

  • Magnetic pollution
  • The presence ofmetal reinforcement, (ceilings, reinforced concrete, floor, metal beams, etc),
  • The room’s shape,
  • If several rooms are equipped next to each other (classroom, offices, etc),
  • The configuration of the place (cinemas, theaters, conference rooms, reception desks, etc),
  • The ideal installation height of the loop,
  • The possibilities of implementation.

It is important to consider all these elements as early as possible in your project, this will allow you to perfom your installation in the best conditions.


When your planning your project, architects, installers, resellers or operators, we invite you to contact us, in order to best meet your specifications and the specific requirements of your facilities.

We support you and provide you with accurate studies for the most complex installations.

There are many situations where the loop coverage has to be placed in specific areas (such as courts or boardrooms) or where many rooms are side by side (such as classrooms of schools or universities). Low-emergence systems reduce external radiation.

These installations involve the implantation of two magnetic loops with a phase shift of 90° in order to obtain a uniform distribution without shadow zones inside the loop. The system then allows an optimization of the clean and uniform coverage, a feedback effect greatly reduced to lower currents, extremely low radiation and reduced sensitivity.

The study of a low-crosstalk system is complex and requires precise technical knowledge. We can provide you with a study for your projets to ensure a compliant and trouble-free installation. We guarantee a fast, efficient and professional service.

How it works?

Hearing aids are not always enough to ensure comfortable listening and understanding. In crowded areas such as shops, theaters, conference rooms, environment can be noisy. The hearing impaired perceives an ambient hubbub that does not allow him to follow a conversation or an event in optimal conditions.

Hearing loop systems

With the hearing loop, a sound can be  transmit by a amplifier (1) to the hearing loop (2) directly into the hearing aid or cochlear implant (3) with a receiver (coil).

if you prominently install the sticker indicating the presence of hearing loop, impaired people will be in total autonomy and use the system comfortably (4) and (5).

This type of equipment ensures listening and intelligibility for people with hearing loss. Howerver, installing a induction loop system that has been poorly studies upstream will have an impact on hearing quality for the hearing impaired. This is why we support you, whatever your projects.


UHF wireless system

Opus Technologies offers a new production line of UHF and combined sound systems for public audio accessibility and solutions adapted to all situations.

The UHF wireless audio system transmits a person’s voice to one or more receivers. Our transmitters and receivers can cover op to 16 channels and offer optimal sound quality.

Thanks to our listening accessories and our microphone, we guarantee a clear sound, even in a noisy surrounding environment.

ZI Lagrange II, 9 Chemin de la vieille Ferme,
33650, Martillac, FRANCE
(+33) 09 81 24 00 06