Apple Inc., formerly Apple Computer, Inc., is an American multinational corporation headquartered in Cupertino, California that designs, develops, and sells consumer electronics, computer software and personal computers.
Shure Incorporated is an American corporation originally founded by Sidney N. Shure in Chicago, Illinois in 1925 as a supplier of radio parts kits. The company became a consumer and professional audio-electronics manufacturer of microphones, wireless microphone systems, phonograph cartridges, discussion systems, mixers, and digital signal processing.
The company also produces listening products, including headphones, high-end earbuds and personal monitor systems.
Samsung Group is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. It comprises numerous subsidiaries and affiliated businesses, most of them united under the Samsung brand, and is the largest South Korean chaebol (business conglomerate).
Sony Corporation, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Konan Minato, Tokyo, Japan. Its diversified business is primarily focused on the electronics, game, entertainment and financial services sectors. The company is one of the leading manufacturers of electronic products for the consumer and professional markets. Sony is ranked 87th on the 2012 list of Fortune Global 500.