The impedance of a headphone refers to the resistance property within a headphone circuit, which can also be understood as the resistance of the headphone to current. The unit of impedance is Ohm, which represents the working voltage required by the earphone to drive its operation.
Specifically, the higher the impedance, the greater the resistance of the earphone to current, and the higher the required power. Typically, headphones with impedance within 16 to 64 ohms can be matched with common audio devices. However, if the impedance of the earphones is high, the required voltage and power will also increase accordingly, so a more powerful player is needed to drive.
If the power of the playback device used is too low, it cannot push the headphones with high impedance, resulting in weaker sound and poorer quality. If the power of the player is too high, it may cause damage to the headphones with low impedance.
Therefore, selecting the impedance of headphones correctly is crucial for ensuring sound quality and extending the lifespan of headphones. It is generally believed that low impedance headphones are more suitable for mobile phones, computers, etc., while high impedance headphones require a more professional player.
