Circuit board VU is a representation of audio signal level. It is an electronic component used in audio equipment. It is mainly used to display the signal strength of audio signals in tape players, record players, CD players and other audio equipment. In different audio equipment, the circuit board VU may behave differently. But in any case, it is a very important audio display component that can help users adjust the volume of the speaker and improve the sound quality.

The main function of the circuit board VU is to provide a more intuitive and accurate reference when adjusting the volume of audio equipment. This protects the speakers well from being overdriven and causing damage. The characteristic of the circuit board VU is that it can reflect the dynamic range of the audio signal to a certain extent, supports self-repair of signal overload, has very high accuracy and reliability, and is an indispensable component of high-quality audio equipment.

Circuit board VU has many application scenarios, mainly in the field of audio equipment. For example, the circuit board VU can be used to adjust the volume of TVs, speakers, power amplifiers, etc. In addition, circuit board VU is also widely used in recording studios, mixing rooms and other industries. In these scenarios, the circuit board VU can provide a very accurate signal reference, providing an essential tool for music production, recording work, etc. At the same time, when playing high-fidelity music, the circuit board VU can also improve the listening experience and allow users to better enjoy music.