This preamp board can be used with the electret microphone supplied or to bring a small input signal up to a suitable level to drive an audio power amplifier. Use with our 3017 - 1W Mono Audio Amplifier Board to produce full power output or our 1052 - 3-Input Mono Mixer Board or your own equipment.
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
The kit version is supplied with components to build either the MIC or AUD versions.
SpecificationsInput Voltage | 6-12Vdc |
Current | 3mA max. |
Maximum input | ~ 100 mV RMS (gain = 27 dB) |
Maximum output | ~ 2.5 V RMS with 12 V supply |
Frequency resp. | ~ 70 Hz to 45 kHz +/- 3 dB (Standard setup) |
THD | < 0.1 % at 1V 1kHz |
Gain | 40dB max. (see Product Documentation link below for details) |
S/N ratio | > 75 dBA |
Board Dimensions | ~ 30 x 43 x 15 mm |
Connections | Screw Terminal Blocks |
Product Formats | SELF-ASSEMBLY Electronic Kit (KT) or PRE-ASSEMBLED Electronic Module (AS) Product Formats Info |
Documentation | User Manual |