Funktion-One is an innovative manufacturer of professional loudspeaker systems.


We understand sound to be the most important of our senses and, in fact, the root of the structure of the Universe. As such, we try to pay the amazing acuity of human hearing the respect it deserves by providing products that deliver as much resolution and realism as possible.

Almost all modern loudspeakers require significant preset or controller EQ. In contrast, it has always been the Funktion-One approach to design acoustically flat loudspeaker systems, requiring only crossover filters, relative delays and gains. The advantages of this approach are headroom preservation and system linearity, as well as subjectively clearer, more natural audio presentation.


We have always designed our own transducers, down to the finest details, and combined with our unique waveguide and loading technology, we achieve minimum distortion, maximum efficiency and controlled, consistent directivity.



Loudspeakers are inherently very inefficient, typically achieving only 1-5% efficiency. We believe that it’s good engineering and good for the planet to improve this efficiency as much as possible, particularly as high efficiency loudspeakers have such an exciting and dynamic sound quality. Almost all forms of distortion in loudspeakers are correlated with diaphragm movement. By increasing efficiency and reducing cone movement, distortion is significantly reduced.


The results of our work into improving loudspeaker efficiency are self-evident, with significantly fewer loudspeakers and amplifiers required in comparison to other systems in the market, meaning reduced power consumption and CO2 emissions.



Our R&D team has a long history of innovation. It is responsible for a number of industry firsts, including the 21” loudspeaker frame size, the turnkey package touring system, and the integrated loudspeaker management system. Furthermore, we were early adopters of live spatial audio technology, computer-based electroacoustic measurement systems, composite cabinet and diaphragm materials, Neodymium magnets and PWM (Class D) amplification.

All critical design decisions at Funktion-One are informed by comprehensive listening tests. The results of these tests are validated by in-depth electroacoustic measurements with both industry-standard and bespoke instrumentation and software. We have also designed and constructed a robot for automated 3D directivity measurement of loudspeakers and arrays weighing over 300kg and have developed a range of new measurement types and methods in our pursuit of audio excellence.