The ear-back hearing aid has higher power and is more suitable for severe and severe hearing loss;
It is convenient to install some complicated lines and chips to improve performance and enhance functions;
Large batteries, knobs, etc. are easy to operate and more suitable for the elderly;
Easy to repair, durable and easy to adjust;
Pediatric ear can only need to change the ear mold, it is more convenient;
No need to order, can be mass produced.
Can not play the positioning function of the pinna;
Concealment is relatively poor.
Small and concealed;
The auricle positioning function can be performed compared with the ear-back machine.
Not suitable for young children compared with the back of the ear;
Compared with the ear-back machine, the power is small;
The microphone and the receiver are close to each other, which is easy to produce howling;
It is not convenient for the elderly and hands with inconvenient movements;
The internal movement is easily damaged by defects such as defects;
The price is relatively expensive.
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