This item is assembled and tested board . This circuit is to amplify the sound signal from the dynamic microphone which has low impedance. Dynamic mic is the microphone which is use to sing a song / Speak.

Technical information
- Require power supply 9VDC
- It contains 2 transistor, some resistor and capacitor. ( not difficult to build )
- Comes with the schematic diagram
- PCB size : 1.6" x 1.3"

Download User Manual