How to see the quality of headphones according to the parameters?

Frequency response: The sensitivity value corresponding to the frequency is the frequency response, and the drawn image is the frequency response curve.Wired Sleep Earphone ， The range that human hearing can reach is about 20Hz-20000Hz, and the mainstream headphones on the market have reached this level.

Impedance: Low impedance headphones are generally easier to push. Therefore, portable power-saving devices such as Walkman should choose low-impedance headphones. At the same time, pay attention to the high sensitivity. Sensitivity indicators are more important to the Walkman.

Headphone sensitivity (Sensitivity): The sound pressure level that the headphone can emit when the headphone inputs 1 mW of power (the unit of sound pressure is decibels, the higher the sound pressure, the greater the volume), so generally the higher the sensitivity, the smaller the impedance, and the higher the headphone. Easy to drive.

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