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Audio and video power cable is an important connecting cable for audio devices. It mainly bears the dual functions of transmitting power to audio devices and transmitting audio signals in some cases. It is like a "blood vessel" that injects power into audio devices and ensures the stable transmission of audio signals. It is an indispensable part of achieving a high-quality audio. experience.

Audio and video cables include many types of products, different types have different characteristics, and different application focuses. Common audio cables include XLR, TRS, RCA, etc.

XLR (Canon head) audio cable, which adopts balanced transmission mode, has three pins: hot end (signal positive), cold end (signal negative) and ground end, which can reduce common mode interference and keep audio pure in long-distance transmission. It is often used in professional recording studios to connect condenser microphones and mixers, and to connect instrument amplifiers and mixers in stage performances;

TRS (large three-core) audio cable is similar to 6.35mm The balanced interface of the headphone plug has a positive signal at the tip, a negative signal at the middle ring, and a ground at the bottom. The wire core has good anti-interference performance and is often used to connect electronic musical instruments with effectors or speakers, and is also used for line output and input of audio equipment;

RCA (lotus head) audio cable is an unbalanced transmission method. The center pin of the plug transmits audio signals and the metal ring is grounded. One line contains two plugs for left and right channels. It has a simple structure and is commonly used in home theater systems to connect audio source devices and amplifiers, computer sound cards and active speakers;

3.5mm (small three-core) audio cable plugs are small and portable, and are divided into stereo (left channel, right channel, ground) and mono (signal, ground). They are often used to connect portable audio devices such as mobile phones, MP3 players, and tablets with car audio, small headphones or desktop speakers.