We have *8 years experience in making the Hearing Aid. By now we have developed the Hearing Aid to have the function of answering phone. All the products we are making can match the US ANSI*2 and IEC***7/*4 standard. We also have the advanced international ***0CX Hearing Aid Auto Analyzer to control the production process.

  There are some important indexes for a Hearing Aid.
 1. power increasing range
 2. stability of output signal and timbre disposal
 3. Max distortion index and disposal function
 4. earphone quality
 All the above factors effect the Hearing Aid quality
 KF**6 Hearing Aid Pocket Model
 Max sound output:**9±4dB
Sound gain:*0±5dB
Total harmonec wave
Distortion:d**0%
Input noise:d*6db
Voltage:1.5V(AA)
Current:d6mA
 
KF**8 Hearing Aid for listen phone
 

  Max sound output:**9±4dB

  Sound gain:*0±5dB

  total harmonec wave

  Distortion:d**0%

  Input noise:d*6dB

  Voltage:1.5V(AA)
  Current:d8mA

KF**9 Behind the Ear Hearing Aid
Max sound output:**8±4dB Sound gain:*2±5dB
total harmonec wave Distortion:d**0%
Input noise:d*6dB
Voltage:1.5V(A**5)
Current:d3mA