Do you not know what a hifi amplifier is?

The full name of HiFi is High Fidelity, which means "high fidelity". From the literal meaning, HiFi sound quality refers to a sound that is highly similar to the original sound, and is a professional term often used by audiophiles.

The technical terms commonly used in HiFi

Analysis power: What audiophiles often refer to as "analysis" actually means to ensure the authenticity of the sound, and intuitively speaking, it is the ability to express sound details. For example, the level of delicacy on monitors such as 720P and 4K.

Sound field: also known as a sound field, it refers to the range that can be formed by the sound emitted by the left and right units, making people feel immersive and even able to feel the position and distance of the various vocal instruments and voices behind the unit, as well as the scale of the scene.

Sound dyeing: The opposite of natural neutrality in music is that the sound is dyed with some characteristics that it does not have, just like the sound obtained by talking to an empty bottle is a typical sound dyeing. Sound dyeing is more about incorporating beneficial distortions while ensuring authenticity.

HiFi is actually a kind of quality, not related to whether it sounds good or not. The higher the quality of HiFi, the better the sound quality of the player or earphones, the richer the details, and the better it can reproduce the recording scene.

High fidelity amplifier