DC AC Instrument Amplifier AD620 Voltage Amplifier Module Small Signal Single ended Differential

DC AC Instrument Amplifier AD620 Voltage Amplifier Module Small Signal Single ended Differential
  • Продавецnewyorkjetsvsmiamidolphins.us
  • Список ценUS $22.00piece
  • Продажная ценаUS $22.00piece
  • ДоставкаБесплатная доставка
  • Рейтинги4,9 (468)

Oписание продукта

Please click below picture to get more coupons save money .
Welcome your OEM .ODM order.
The product will be ship out within 1-4 days after receiving ur payment.this price is for unit one ,need both ears,please place 2pcs.
 The hearing aid will be automatically change the sound until you hear comfortable according to different environment
 program switch is automatically change ,with noise reduction




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If you want to  programmable hearing aid by yourself please Click below Products to buy(software free provide)

usb Programmer device+ USB Hearing aid programming cable






Please send your audiogram when you got it .we will help free programmable (debugged on computer according to your hearing sistuation.or we will recommend the most suitable hearing aid to fitting your hearing loss if you are not sure which one is the best for you .programming process page 




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medical care instrument mini amplifier hearing aid with adaptive feedback S-13A Drop Shipping


Technical Specifications
100% digital process chip imported from USA ,High quality earphone headset for elderly deafness

WDRC Signal Processing 
4 Channels 
Adaptive Feedback Cancellation (AFC) 
FrontWave Directional Microphone 
12KHz Bandwidth 
3Memories means

A:Normal output mode

B:Higher level volume and Noise reduce

C:Answer Telephone (automatically mode)
Adjustable Indicator 
Super Quiet 
Adjustable for High & Low Frequency 
Memory Switch Indicator 
Low Battery Indicator 
MPO Control 
Compression Knee Poins ,hearing aid,hearing 

Technical Parameters:

Peak Gain: 42dB
HFA Full-on Gain: 35dB
Frequency Range: 200-7000HZ
THD at:
500HZ :1.6%
800HZ :1.0%
Eq.Input Noise Level: 27dBSPL
Battery Current Drain: 0.6mA
Attack Time: 6ms
Release Time: 22ms
 ,digital hearing aid,itc hearing aid,sound amplifier


1.The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silica gel) to connect to the headphone connector pedestal  
2.The battery installation: Gently open the battery compartment cover, put a battery into the battery compartment in the right direction, then close the battery compartment .
3.Before you use this item ,you have to turn the ON-OFF switch to Off,and turn the sound volume to minimum
4.Then put this item on you ear, keep it tightly
5.Next, turn this item ON, adjust the volume until you hear clear sound


- Adjust volume to the minimum before wearing.
- Choose an earplug of slightly bigger size to avoid whistler.
- Increase volume gradually to avoid sudden increase in sound.
-If you hear a howling,check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. 
- Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids.
- Use for long periods of time, please remove the batteries to prevent battery rot erosion hearing aid components.

Package Content:

1 x Earphone headset Invisible Hearing Aid

1 x hearing aid A10 batteries 
1 x Cleaning Brush

3 x Earplug(Different Size)

1 x Instruction manual ( in English)
1*feie hearing aid factory warranty card 2 years 

•Delivery within 1-3 business  days (besides that China Holiday)


Two years ,siemens hearing aid,hearing aids siemens,deaf hearing aid


We send the products  by sea or by air accroding to the demand of customers ,hearing aids prices,hearing aids prices in india

_MG_4841_MG_4845 - _MG_4860_MG_4866_MG_4867_MG_4921_MG_4922_MG_4923_MG_4938









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All hearing aids must be through professional medical equipment test before shipment ,quality must be guaranteed






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