When you want to buy a set of headphones, you come across a range of specifications that provide basic information about their requirements and capabilities. While nothing is as important as using your own headphones to make sure they sound enough to meet your needs and feel comfortable, understanding the specifications will help you narrow down.


What is a driver? Simply put, the headphone driver is basically a mini speaker in headphones that can receive electrical signals from your device and convert them into sounds that your ears can pick up. It consists of three components: Magnets, Voice Coil, Diaphragm.They come in different sizes and styles. As a general rule (but not always), the larger the drive, the better the sound, especially for bass performance. Drives come in different types, with balanced armature, static, planar magnetic and dynamic.


The impedance on headphones is the abbreviation of its AC impedance. Its size is the DC resistance of the coil is above 200Ω, which is to match the headphone jack on the professional machine. On machines with headphone jack output such as desktop or amplifier, VCD, DVD TV, etc., it is generally suitable to use medium and high impedance headphones. If you use a low-impedance earphone, you must first turn down the volume and then plug in the earphone, then adjust the volume a little bit to prevent the headphone from overloading. The earphone is burnt out or the voice coil is deformed and misplaced to cause breakage. The impedance of the earphone is generally easier to push. Therefore, portable and power-saving machines such as Walkman should choose low-impedance headphones, but also pay attention to high sensitivity. Sensitivity indicators are more important for the Walkman.


Sensitivity is also called sound pressure level. In general terms, the sensitivity of the headphones reflects the amount of power that needs to be input in the case of the same loudness. The higher the sensitivity of the earphone, the smaller the input power required, and the louder the sound is output under the same power source. For portable devices such as Walkman, sensitivity is a very important indicator. In general, the sensitivity of the Walkman headphones is higher than that of the monitor-level headphones, which is around 110db, so the value is naturally larger for the Walkman.

Frequency response

The frequency response refers to the phenomenon that when the sound signal outputted by a constant voltage is connected to the system, the sound pressure generated by the speaker increases or decreases with the change of the frequency, and the phase changes with the frequency. The sound pressure and phase The change relationship associated with the frequency is called the frequency response. It also refers to the range of frequencies that the sound system can reproduce within the range allowed by the amplitude, and the amount of change in the signal within this range is called the frequency response, also called the frequency characteristic. The ratio of the maximum value to the minimum value of the output voltage amplitude over the rated frequency range, expressed in decibels (dB).


Distortion is divided into harmonic distortion, intermodulation distortion and transient distortion. Harmonic distortion refers to the distortion caused by the higher harmonic components that the original signal does not have in the sound playback; the intermodulation distortion mainly affects the tonal aspect of the sound; the transient distortion is due to the existence of a certain inertial mass of the speaker. The vibration of the basin cannot keep up with the difference between the original signal and the playback sound caused by the vibration of the instantaneously changing electrical signal. It is more important in the speaker and speaker system, which directly affects the degree of restoration of the sound quality, so this indicator is closely related to the quality of the speaker.

This is often expressed as a percentage, and the smaller the value, the smaller the distortion.

With these five parameters, we can get a deeper understanding of the headset and help make choices at the time of purchase. However, you can't rely too much on the performance parameters of the headset. If you want to buy a headset that suits you, you still need to go to the store and try it out for yourself.

Author's Bio: 

Grace Lee is an editor, freelance writer. Enjoy singing, sports with families and being interested and curious about highly technical sphere. And loves to keep a tab on what's happening in the world of technology.