ATCO American Technology (MM)

American Technology Corporation (ATC) (NASDAQ: ATCO) will hold a conference call and webcast to discuss the Company's business and financial results for the second quarter of its fiscal year 2009 (ended March 31, 2009) on April 30, 2009 at 1:30 p.m. Pacific Time. The Company is scheduled to issue its second quarter fiscal year 2009 financial results after market close on April 29, 2009.

To listen to the conference call, please dial 1-866-830-5133; the conference number is 1355381. A question and answer session will be available to dial-in callers after the speakers' presentation. The conference call will also be Web cast live (listen-only mode). Please click here to register and listen to the conference call webcast:

WEBCAST LINK

http://w.on24.com/r.htm?e=143820&s=1&k=520EC83CC6AE635826CF043402089B2F

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 for approximately thirty days through the link above.

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