Mono Preamplifier Board (Electret MIC, Audio & Guitar Versions)Quasar ElectronicsUse to amplify the electret microphone supplied or any small audio signal up to a suitable level to drive an audio power amplifier. 6-12Vdc. 40dB gain...Electronics > Circuit Components > Printed Circuit Boards > Development Boards3098KT3098KT10.74Quasar Electronics Limitedhttps://quasarelectronics.co.uk/Item/3098-mono-audio-preamplifier-module
Delivering a minimum gain of 40dB, this is normally more than enough for most applications. Gain can be increased by simply changing a single resistor value. See kit documentation below for full details.
Assembled Version Formats
AS3098-MIC - supplied with onboard electret microphone
AS3098-AUD - supplied with a terminal block for audio input connection and without the onboard microphone and bias resistor R9
AS3098-GTR - supplied with terminal blocks for all connections and components for guitar (R5 = 10K and C6 = 47uF)
The kit version is supplied with components to build either the MIC or AUD versions.
~ 100 mV RMS (gain = 27 dB)
~ 2.5 V RMS with 12 V supply
~ 70 Hz to 45 kHz +/- 3 dB (Standard setup)
< 0.1 % at 1V 1kHz
40dB max. (see Product Documentation link below for details)