A 1/4-inch cable is a type of audio cable commonly used to connect various audio equipment, such as guitars, amplifiers, and mixers. The name refers to the diameter of the connector, which is 1/4 inch wide. These cables are often used for both instrument and line-level signals, making them versatile in different audio setups. There are two main types of 1/4-inch cables: mono and stereo. Mono cables have a single channel and are typically used for instruments, while stereo cables have two channels and are used for devices that require a left and right audio signal. Both types are essential for achieving high-quality sound in music production and live performances.