What kinds of headphones are there?

Headphones are mainly dynamic and static. Although there are several kinds of equipotential and electret headphones besides these two kinds, they have either been eliminated or used for professional purposes, and their market share is not large, so I won't discuss them here. Dynamic earphone (also called electric earphone): At present, the vast majority (about 99% or more) of earphones and earplugs belong to this category. The principle is similar to that of ordinary speakers. The coil in the permanent magnet field is connected with the diaphragm, and the diaphragm is driven by the signal current to make sound. Moving-coil headphones are relatively efficient, and most of them can be driven on audio through the output of headphones. Electrostatic earphone (also called capacitive earphone): The diaphragm is in a changing electric field, which is extremely thin and accurate to several microns (at present, the diaphragm of STAX's new generation electrostatic earphone is accurate to 1.35 microns), and the coil drives the diaphragm to sound under the action of electric field force.

The sound pressure level that electrostatic headphones can achieve is not as high as that of dynamic headphones, but the response speed is fast, and various tiny details can be reproduced with very low distortion. Because of its precise structure, high requirements for materials, manual assembly and debugging, it is expensive. In addition, there are dual-band headphones: dual-band headphones are two-segment headphones that combine the advantages of electric and capacitive headphones on the basis of semi-open headphones. It combines the advantages of electric, capacitive, closed and open headphones. This kind of earphone is outstanding in dynamic range, transient response, playback quality and timbre thickness, and its accurate sound analysis is the best choice for music enthusiasts. Generally speaking, the electric earphone has the characteristics of simple structure, stable sound quality and low price, which is suitable for ordinary people to choose. It can meet the requirements of good sound quality and wide frequency bandwidth of general capacitive headphones, but because of its complex technology and relatively high price, it is suitable for enthusiasts to choose and its listening quality is quite good.