Monster Inc. is an American company that manufactures and markets 6,000 different products, but is best known for audio and video cables. It also produces speakers, headphones, power strips, mobile accessories and audio devices for automobiles. The company was founded by an audiophile and engineer, Noel Lee, in 1979 by experimenting with different ways to build audio cables. It grew by doing demonstrations to convince the industry that audio cables made a difference in audio quality and by establishing relationships with retailers that were attracted to the cable's profit margins.