The sensitivity of headphones refers to the ratio between the electrical signal that the headphones can convert and the sound pressure level at a specific audio frequency. Sensitivity is usually expressed in decibels (dB SPL/mW), which represents the sound pressure level output by the earphone per milliwatt of input power.
The higher the sensitivity, the smaller the power required for the headphones, which can more effectively convert electrical signals into audio signals. Therefore, higher sensitivity typically represents higher audio quality and a better audio quality experience. However, high sensitivity of headphones can also lead to their susceptibility to external noise interference, affecting audio performance.
The sensitivity of most headphones ranges from 90 to 110 dB SPL/mW. High end headphones may have higher sensitivity, but their prices are also correspondingly higher. It should be noted that sensitivity should not be the only indicator for selecting headphones, and audio issues caused by factors such as application environment and audio frequency response should also be considered.
