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Hi-Fi is an English abbreviation for High-Fidelity, which literally translates as "high fidelity". Its definition is: a reproduction sound very similar to original sound. Then following editor will introduce you to what are Hi-Fi headphones and classification of Hi-Fi headphones.

What are Hi-Fi headphones

hifi is short for High-Fidelity in English, which literally translates to "high fidelity". Its definition is a reproduced sound that is very similar to original. Hi-Fi headphone audio system is mainly composed of auditory system (human ear), hardware system (hardware), software system (signal source), and listening environment. Hi-Fi headphones are headphones without tone transmission. Through Hi-Fi headphones, you can hear most realistic and unchanging sound quality, bringing you most comfortable music enjoyment for your hearing.

Hi-Fi headphone performance - clear sound quality, good balance, good resolution, rich detail and clear reproduction of even weakest signal. Mumbling "hiss", "ohm", "coax".

Classification of Hi-Fi headphones.

1. The dynamic earpiece is most common and common earphone. Its drive unit is a small dynamic speaker, and diaphragm connected to it is driven by a voice coil in a constant magnetic field to vibrate. Dynamic headphones have a relatively high efficiency, and most of them can be controlled by headphone output of audio system, they are reliable and durable.

2. An isomagnetic earpiece driver is like a scaled-down planar speaker. It incorporates a flat voice coil into a thin PCB-like diaphragm to evenly distribute driving force. Magnets are concentrated on one or both sides of diaphragm, and diaphragm vibrates in magnetic field it creates. The diaphragm of an isomagnetic earphone is not as light as diaphragm of an electrostatic earphone, but has same large vibration area and similar sound quality. Due to large mass of diaphragm and structure of magnetic circuit, its efficiency is low and it is not as easy to control as a dynamic earphone .

3. Electrostatic headphones have light and thin diaphragms that are polarized with a high direct voltage, and electrical energy necessary for polarization is converted by alternating current, and there are also rechargeable ones. The diaphragm is suspended in an electrostatic field formed by two fixed metal plates (stators). When an audio signal is applied to stator, electrostatic field changes, causing diaphragm to vibrate. A single stator can also drive a diaphragm, but push-pull form of double stator has less distortion. Electrostatic headphones must use a special amplifier to convert audio signal into hundreds of volts. Electrostatic headphones can also be powered by connecting a transformer to output of a power amplifier. Widespread on market, this is a compromise. for expensive cost of electrostatic headphone amplifiers, and signal quality does not reach level of specially designed electrostatic headphone amplifiers.

Electrostatic headphones are precision-engineered, have high material requirements, and are mostly assembled and fine-tuned by hand, so they are expensive. Due to limited distance between stator and diaphragm, diaphragm travel is limited, and sound pressure level that can be achieved is not as high as dynamic headphones, but its response speed is fast, and it can reproduce various fine details and distortion is extremely low.

4. Electret headphones are also called fixed electrostatic headphones. Its diaphragm is itself polarized, or polarized by an electrostatic field emitted by a polarizing material outside diaphragm, and no special equipment is required to provide polarization voltage. Electret headphones have moredue to characteristics of electrostatic headphones, but electret body gradually depolarizes, volume becomes smaller, performance decreases, and diaphragm needs to be replaced. The service life is usually 5 to 10 years.

The above is an introduction to HiFi headphones. During use, we must also pay attention to their maintenance. For example, wipe sweat off headphone cable after use, and protect headphone from strong magnetic field and wet illusion. , The best maintenance can bring us best audiovisual enjoyment.