Why can't I buy hearing aids online?

Hearing aids are Class II medical devices (along with X-ray filmographs, ultrasound, biochemistry, etc.), which need to be controlled for safety and efficacy according to national regulations.

So that hearing aids can not be sold on the Internet, it is generally recommended to the professional fitting center to go to the fitting.

The reasoning is simple: if you don't go through a formal fitting process, it's easy to buy a hearing aid that doesn't suit your situation.

The hearing aids that you buy online may either over-amplify the sound, making it very loud and harsh, or under-amplify the sound, making it hard to hear when you wear the hearing aids. It's not worth it if you make a mess out of something that's supposed to be good.