ST develops and manufactures a broad range of components for use in car stereo and multimedia systems for both traditional analog broadcast plus newer digital broadcast systems.

ST's product range for car stereos covers all systems from the antenna to the loudspeaker: AM/FM tuners, analog and digital signal processors, audio power amplifiers, RDS decoders and CD servo controllers. A pioneer in the field of audio technology, ST is now driving the move from analog technology to the new architectures that are primarily based on digital signal processing techniques.