TOA Corporation

TOA Corporation (TOA株式会社) is a Japanese electronics company, specializing in public address systems, intercom systems, microphones, array speakers and megaphones. The company's products are used in a variety of settings, among them Brompton Oratory, a large neo-classical Roman Catholic church in Knightsbridge, London. Their speaker systems are also used in the Al Fateh Grand Mosque, located in the Kingdom of Bahrain.

Early history
The company was founded in 1934 by Tsunetaro Nakatani as the TOA Electric Manufacturing Company.