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  • 11/08/2019

    + Working as intended. + Good quality + Very useful + Smart chip offering a lot of functions + High gain - Nothing.

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  • 25/01/2021

    Travaillant en tant qu'intendet. Gain élevé.

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  • 27/04/2017

    Применение этих микрофонов с ардуино https://youtu.be/mk5nf10OP-E

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  • 24/01/2021

    Tout va bien selon la description.

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  • 22/05/2018

    Product arrived in good perfect condition

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  • 23/12/2017

    Item very good for various audio projects. I used it in a doorbell and it works fine.

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  • 09/05/2022

    D'accord!

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  • 19/11/2021

    Très bon

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  • 19/11/2021

    Convient bien pour la recherche de direction acoustique

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  • 14/02/2019

    Excellent low noise microphone amplifier + electret microphone on it. Power it either with 3.3V or 5V, you may feed directly out to your Arduino ADC input. The output from this preamplifier is about half of the VCC voltage. There is AGC (Automatic Gain Control), but it may be bad if you want use it as YouTube microphone for your computer - while not talking, all background noises are amplified. To disable AGC, short together pins 13 and 14 on the chip, or better to adjacent resistors with designations "222" and "154". This way audio is more silent when not talking close to the microphone. I found also useful pre-amplifier for other things where no need bias resistor, just "raw" analog input. In this case use soldering iron and remove 2.2 kOhm resistor (designation "222"). This way bias voltage will be not present on input pin (just unsolder microphone capsule) and you have really great pre-amplifier for your projects (radio communications, various detectors, and so on). I will provide picture with place where to make short if you want to disable AGC. Next to this spot is resistor "222" which can be also removed together with microphone for use to other purposes as a high quality and low noise pre-amplifier. Bandwidth of this preamp is about 35 kHz.

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