Definitive Technology
| Company type | Private | 
|---|---|
| Industry | Consumer electronics | 
| Founded | 1990 | 
| Founders | Sandy Gross, Don Givogue, Ed Blaise | 
| Headquarters | Vista, California, U.S. | 
| Key people | Kevin Duffy (CEO) | 
| Products | Home audio, loudspeakers, soundbars, headphones, audio equipment | 
| Parent | DEI Holdings | 
| Website | www | 
Definitive Technology (sometimes referred to as Def Tech) is an American unit based in Vista, California, of the Sound United division of electronics company DEI Holdings, that designs, develops and sells home theater audio systems, soundbars and headphones.