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The headphones are classified according to the type of drive (transducer) and wear.

Dynamic

Dynamic headphones are the most common, the most common headset, the drive unit is basically a small, dynamic speaker, connected by the voice coil driver, in a permanent magnetic field diaphragm vibration. More efficient moving-coil headphones, mostly for the stereo headphone output on the drive, and reliable and durable.

Such as magnetic

Magnetic headphone drive is similar to the narrow plane speaker, it's flat voice coil embedded in a thin diaphragm, like printed circuit board, you can make the average distribution of driving force. The magnet is concentrated in one or both sides of the diaphragm (push-pull), the vibration of the diaphragm in the formation of a magnetic field. Such as magnets headphones diaphragm electrostatic headphones diaphragm as light, but the same vibration area and close to the sound, it is not as good as the moving-coil headphones and high efficiency, not easy to drive.

Electrostatic

Headphones

Electrostatic headphones are light, thin diaphragm by the high DC voltage polarization, the polarization of power required by the alternating current into a battery-powered. The diaphragm suspension fixed by the two metal plates (stator) the formation of a static electric field, when the audio signal is loaded into the stator, the electrostatic field change, driven diaphragm vibration. Single stator can drive the diaphragm, but the push-pull in the form of pairs of stator distortion. Electrostatic headphones must use a special amplifier to the audio signal into the hundreds of volts signal transformer connected to the power amplifier output can also drive electrostatic headphones. Electrostatic headphones are expensive, difficult to drive, can reach sound pressure level did not moving-coil headphones, but its fast response, be able to playback all kinds of tiny details, and low distortion.