The Mono Audio Preamplifier kit has been developed to amplify the low level audio signals.  It is based on commonly available Op-Amp.  It can be used as a Mic preamplifier etc.

• Power supply : 12 ~ 24 VDC @ 20 mA
• Output : Gain 35 adjustable
• Onboard PRESET to adjust Gain, Level
• Terminal pins for connecting power supply, input and output
• Power-On LED indicator
• Four mounting holes of 3.2 mm each
• PCB dimensions 44 mm x 42 mm