What brand is the Audi A4 sound system?

[JaceAnn]

Audi A4 sound system is from the B&O brand. Below is an introduction to car audio systems: The main components of a car audio system are the head unit, amplifier, and speakers. When purchasing, special attention should be paid to the performance of these three parts. The most direct way to judge the quality of the head unit is to look at its technical specifications. Below is an introduction to the technical specifications: 1. Output power: Most head units currently indicate music power, ranging between 40W~60W, and the power should not be too high. 2. Frequency response: The human ear can hear frequencies ranging from 20Hz to 20KHz, so this specification should at least cover this range, and the wider the better. 3. Signal-to-noise ratio: This specification refers to the ratio of music signal to noise. Generally, high-end car audio systems have a ratio above 90DB, and the higher the number, the better. 4. Total harmonic distortion (THD): This specification reflects the fidelity of sound reproduction. The lower the number, the higher the fidelity, and the better the sound quality.