Piezoelectric earphones: use the piezoelectric effect of piezoelectric ceramics to make sound. Advantages: high efficiency and high frequency. Disadvantages: large distortion, high driving voltage, poor low-frequency response, and poor resistance to shock. These earphones are mostly used for telegraph transmission and reception, and are now basically eliminated. A small number of headphones use piezoelectric ceramics as a high-pitched sound unit.
MAONO is an innovative designer and manufacturer of Lavalier, Podcasting, Wireless, Shotgun, Recording microphones and accessories for Smartphone, Camera and PC, etc.