TOA Corporation is a specialist manufacturer of sound equipment for commercial and professional use. Founded in 1934, and developed many products that have been the first of their kind in Japan or the world, such as reflex trumpet speakers and electric megaphones.

In addition to such products as Voice Evacuation Systems for various facilities, announcement broadcast systems for stations and airports, music and announcement broadcasting for commercial facilities, microphones for office conferences, and audio equipment for sports facilities and halls,

TOA has provided innovative audio products and solutions to thousands of different places.