The coaxial output on TV is mostly AV75 coaxial cable. As soon as the TV sound was plugged in, it was disconnected. When the other end of the coaxial cable is plugged into the coaxial interface of the power amplifier, the power amplifier will have stereo sound. It can be equipped with a stereo that can be connected directly, or it can be connected directly with the microphone of the echo wall of the wheat nest.

Video analog signals are usually transmitted by coaxial cable, so the transmission interface is also called coaxial output or coaxial input. (Cable TV set-top boxes connected to TV are mostly coaxial interfaces. ) Coaxial interface can also be used for digital transmission, but on the output of 4K TV, it is an analog signal.

Extended data:

The structure of coaxial line, as its name implies, adopts coaxial design. The central axis is mostly conductive copper wire, the outer layer is insulating plastic, the outer layer is covered with reticulated copper or alloy conductor, and the outermost layer is insulated material sheath. Most coaxial cables for audio and video use Lotus /RCA plugs on both sides of the cable.

Coaxial SPDIF, marked with coaxial on the equipment backplane. Digital coaxial interface adopts coaxial cable with impedance of 75 Ω as transmission medium, which has the advantages of constant impedance, wide transmission frequency band and high-quality coaxial cable bandwidth up to several hundred megahertz. The time base error of digital coaxial transmission is very small, so this transmission mode has a good performance in sound quality. ?

Baidu encyclopedia-coaxial output