How to buy earphones

For the initial understanding of the plug-in headset, the steps of "watching, listening, and recognizing" can be used to identify: firstly view the technology and parameters, secondly listen to the sound quality, and thirdly recognize the brand.


 look at the process and parameters

At first glance, the craftsmanship is to judge the quality of the headset from the first appearance of the headset, whether the manufacturing process is accurate, fake and inferior products generally do not pay attention to these details, so you can judge correctly with a little care.headphones with memory card The technical parameters of the card headset are nothing more than frequency range, output power, and signal-to-noise ratio.

The output power is a reference indicator of the card earphone. It is expressed in watts. This indicator does not indicate the quality of the earphone. It only indicates that to drive the power amplifier required by the card speaker, the battery needs to have the required output power.

The signal-to-noise ratio refers to the ratio of the output signal voltage of the amplifier to the noise voltage output at the same time. It is often expressed in decibels. The higher the signal-to-noise ratio of the device, the less noise it produces. Generally speaking, the larger the signal-to-noise ratio, the smaller the noise mixed in the signal and the higher the sound quality of the sound playback, otherwise the opposite is true. The signal-to-noise ratio should generally not be lower than 70dB, and the minimum signal-to-noise ratio marked by the card headset is mostly between 70dB and 90dB.


Second listen to sound quality

This is mainly to listen to the heavy bass effect.


Three recognition brands

Good card earphones have well-made brand marks. If the trademark does not have a registered mark, there is no anti-counterfeiting certification mark on the outer packaging, and there is no warranty card inside the packaging, most of these three-in-one products are suspected of counterfeiting or inferiority.


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