Ordinary ferrite magnets are generally mainly used for low-grade headphones, 2-3 all the way to the goods, the sound quality is very bad, is not suitable for headphones to do the material. Neodymium iron boron magnets used in high-grade headphones, sound quality first-class, elasticity, good detail performance, good vocal performance, sound field positioning accuracy. Huizhou has a Yue magnetic material, this company I have done, not bad, recommended that you go to the consultation