Headquartered in Southern California, DEI Holdings, Inc. is the parent company of some of the most respected brands in the consumer electronics industry. DEI Holdings is the largest designer and marketer in North America of premium audio (sold under the Polk Audio®, Definitive Technology®, and BOOM® brand names), and consumer-branded vehicle security and remote start systems (sold under Viper®, Clifford®, Python®, AutoStart® and other brand names).

DEI Holdings markets its broad portfolio of products through a diverse array of channels including leading national retailers and specialty chains throughout North America and around the world. Founded in 1982, the company has operations in California, Maryland, Canada, Europe and Asia.

DEI is organized in two divisions, Sound United (audio) and Directed® (vehicle security and remote start systems).