Each hearing aid is a tiny assembly of electronic circuit components surrounded by a plastic cover. Each hearing aid consists of the following: a microphone that picks up the sound, an amplifier that amplifies and forwards the sound, and a receiver (loudspeaker) that delivers the amplified sound to the ear. All are powered by tiny replaceable or rechargeable batteries.
But thanks to microprocessor or computer chip technology, today's hearing aids go far beyond the simplicity of what we described above.
Any hearing aid you buy should help compensate for your hearing loss and be comfortable to wear. Equally important is the fit and the wearer's commitment to wearing it - whether it's you or someone you know. It takes time and dedication to get the best possible result from any hearing aid.
There are many types of hearing aids, and many models from each manufacturer. The important thing is to find the best solution for your own hearing needs.