Peter Jensen co-invented his first speaker in 1915. In 1925, he founded Jensen Radio Manufacturing, which became one of the largest selling brands in mobile audio history. They purchased several companies including Now Hear This, Advent, Acoustic Research, Phase Linear, and Magnat. In 2004, they joined the Audiovox corporation. Starting out as one of the first mobile audio manufacturers in existence, Jensen has grown to include CD players, navigation systems, Bluetooth-compatible receivers and more.