1 Simple Audio amplifier

This circuit uses LM386 ic , a low voltage audio amplifier. This circuit is good in amplifying sound signals as low as 30mV and has a gain around 200 times. You can use this amplifier in intercom projects, guitar amps,and others. Use 8 ohms / 2W speaker.
amplifier schematic
LM386 pins


  1. If you increase the 2.2uF capacitor then you can increase the bass!