Supersonic Svenska distributes professional audio equipment and voice evacuation alarm systems for public environments, and holds SBSC certificate 18-130 as anläggarfirma utrymningslarm med talat meddelande to SBF 2018:1, valid to the end of 2028. Its product listings state EN 54-24 compliance for the loudspeakers used in evacuation systems, including network horn speakers for schools, offices, hotels, arenas and shopping centres. It operates from Hägersten in Stockholm.