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Orban PC Products Broadens Applications for Optimod-PC 1100 with New Driver

Tempe, Arizona, March 19, 2008 — Circuit Research Labs, Inc. (OTCBB: CRLI.OB), parent company of CRL Systems, Inc. dba Orban/CRL, has released a new driver for its Optimod PC 1100, a full-featured DAB audio processor on a PCI sound card.

The Orban PC 1100 was the first PCI sound card to include a fully professional audio processor for digital transmission channels. It has established itself as the premiere audio processor for Internet streaming and HD Radio's® HDx supplemental channels. New features include:

According to John F. Schaab, Director of PC Products, the improvements not only bring Vista compliance but, because the Window Mixer is now supported, Optimod-PC's processing and mixing capabilities can be easily integrated into applications that previously may have needed a different sound card. This allows Optimod-PC to be used in new applications like ad insertion, distance learning, and teleconferencing, all of which can benefit from the clarity and consistency that a professional broadcast audio processor provides.

Circuit Research Labs, Inc. Forward-Looking Statements
This news release may contain "forward-looking" statements within the meaning of the Private Securities Litigation Reform Act of 1995. Management's anticipation of future events is based upon assumptions regarding levels of competition, research and development results, raw material markets, the markets in which the company operates, and stability of the regulatory environment. Any of these assumptions could prove inaccurate; and therefore, there can be no assurance that the forward-looking information will prove to be accurate.

About Circuit Research Labs, Inc.
Circuit Research Labs, Inc. is a manufacturer of high-quality digital and analog audio processing, transmission encoding, and noise reduction equipment. Circuit Research Labs, Inc. is in the market for radio, TV and Internet audio processing. As technology evolves, Circuit Research Labs continues to innovate with state-of-the-art audio processing products for DAB, DTV and streaming media. The Company purchased Orban® in May of 2000. Orban was founded in 1970 by Bob Orban, who is the world's foremost expert in transmission audio processing for broadcast. Orban leads the industry in the design and manufacture of audio processors for radio, television and Internet broadcasting. Recognized for its standard-setting Optimod® digital audio processors and the Opticodec® codecs, the Orban name has become synonymous with reliable, high performance products. Today, its versatile audio processing equipment and codecs are the products of choice in fast-paced production environments worldwide.

For more information contact David Rusch at phone +1 (480) 403-8300, fax +1 (480) 403-8301 or e-mail: drusch@orban.com. Information is also available at www.orban.com and www.orban-europe.com.

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