ATCO American Technology (MM)

American Technology Corporation (ATC) (NASDAQ: ATCO) will conduct a conference call to discuss the Company's fiscal third quarter 2009 business and financial results on August 4, 2009 at 9:00 a.m. Pacific Time. The Company is scheduled to issue its fiscal third quarter 2009 financial results after market close on August 3, 2009.

To access the conference call, please dial 1-866-835-8908; the conference participant code is 1380373. A question and answer session will be available to dial-in callers after the speakers' presentation. The conference call will also be available through the Webcast link below (listen-only mode):

WEBCAST LINK

http://event.on24.com/r.htm?e=156116&s=1&k=192492C30EADA143D66E7AE389509C17

To participate, please dial-in/log-on at least 5 minutes prior to the scheduled start time in order to download and install any necessary audio software and/or to register for the call.

Questions to management can be submitted prior to the conference call by e-mailing them to: info@atcsd.com.

The webcast will be recorded and available for replay through the Webcast Link above approximately 24 hours after the conference call. The replay will be available for approximately thirty days.

About American Technology Corporation

American Technology Corporation is Shaping the Future of Sound® by providing directed audio solutions that place clear, highly intelligible sound exactly where needed. ATC's Long Range Acoustic Device(TM) (LRAD®) and other directed sound technologies comprise the core of an expanding portfolio of products being used in diverse applications including, global military deployments, maritime security, critical infrastructure/commercial security, border/port security, law enforcement/emergency responder communications, and wildlife protection and control. For more information about ATC and its directed sound products, please visit the company's web site at www.atcsd.com.

FOR FURTHER INFORMATION CONTACT: Robert Putnam Investor Relations (858) 676-0519 Email Contact