An audio cable is a type of electrical cable designed to transmit sound signals between devices. Commonly used in audio equipment, these cables connect items like speakers, microphones, and amplifiers to ensure clear sound quality. They come in various types, including RCA, XLR, and 3.5mm connectors, each serving different purposes and compatibility needs. The construction of audio cables typically includes a conductor, which carries the audio signal, and insulation to protect against interference. High-quality audio cables can enhance sound clarity and reduce noise, making them essential for both professional audio setups and home entertainment systems.