Chips That Make Beautiful Music NEW YORK - SigmaTel makes integrated circuits (ICs) for audio applications in a wide range of electronic products. Nearly all of its revenues are derived from Asia, primarily Taiwan, Hong Kong, China and Singapore. Customers consist of original equipment and design manufacturers, such as A-MAX Technology, Tai Guen Enterprise, MSI, Philips Semiconductors, AVC, Samsung and Creative Technology (nasdaq: CREAF - news - people ). We added SigmaTel (nasdaq: SGTL - news - people ) to our recommended list on May 16, 2005. The company's product offerings consist of portable audio systems on chip (SoCs) and audio codecs. SoCs house most or all of the circuits of a system or subsystem on a single chip, thereby optimizing application performance. Portable audio SoCs, which generated 95% of first quarter sales, integrate standard digital components such as microprocessors and memory with proprietary technologies, including analog-to-digital converters, powe...