Velleman Microphone Preamp Kit
This kit was developed as a pre-module for a number of audio applications where there is insufficient input signal. Ideal for use as a microphone pre-amplifier or for level correction. Output level is adjustable with up to 40 dB of gain. Requires power supply of 10-30 VDC/10mA (not included). Frequency range: 20-20,000 Hz. Output impedance: 1K ohm. Max input signal: 40mV. Dimensions: 1-3/4" x 1-1/4". Net weight: 1/4 lb.