A TRS cable is a type of audio cable that features a 1/4-inch or 3.5mm connector with three contact points: Tip, Ring, and Sleeve. This design allows it to carry stereo audio signals, making it popular for connecting headphones, musical instruments, and audio equipment. The TRS configuration can also be used for balanced audio connections, reducing noise and interference. The Tip carries the left audio channel, the Ring carries the right audio channel, and the Sleeve serves as the ground. TRS cables are commonly used in professional audio settings, such as recording studios and live sound systems, due to their reliability and sound quality.