How do Sound Amplifiers Work?
The way they work is very similar to a microphone – picking up on surrounding noise and feeding it through to a tiny speaker. However, they have much greater range and are small enough to sit comfortably behind and in the ear.
An amplifier does not work in the same way as a medical grade haring aid. It amplifiers all sound and has less calibration options than a hearing aid.
Medical grade hearing aids amplify specific frequencies of sound. If you have lost the ability to hear high frequency sounds a medical grade hearing aid can be calibrated to pick up those sounds. An amplifier will enhance sound across the entire spectrum. This means that you will end up hearing background noise as well as what you are trying to listen to.