The THX testing process usually begins early in product development. Manufacturers ship samples to the THX Testing Lab in Northern California where a team of expert technicians carefully analyzes each sample and produces reports on their findings.

Born out of the Star Wars legacy and tied to world’s most acclaimed filmmakers and home entertainment products, no other brand resonates with consumers as deeply, and with greater trust than THX.

After revolutionizing the movie experience, THX realized that it needed to also focus its attention to the burgeoning home entertainment industry in the early 1990s.

The famous THX crescendo, Deep Note, is like no other audio mark in the world. But where did it come from?