S/PDIF, or Sony/Philips Digital Interface, is a standard for transmitting high-quality digital audio signals between devices. It allows for the transfer of stereo audio data without the need for analog conversion, which helps maintain sound quality. S/PDIF can be found in various formats, including optical and coaxial cables, making it versatile for connecting devices like CD players, DVD players, and home theater systems. This interface is commonly used in consumer electronics to connect audio sources to receivers or amplifiers. By using S/PDIF, users can enjoy clearer sound and reduced interference compared to traditional analog connections. It supports various audio formats, including PCM and Dolby Digital.