Introduction: How to Make a Simple, Portable Audio Amplifier (LM 386)

This is an easy way to built a simle audio amplifier

Step 1: Watch the Video

Step 2: Order All the Parts You Need :

1) An LM386

2) 220 μF 16 V capacitor

3) A 10 kΩ resistor

4) Mini Jack cable

5) A switch

6) 1W speaker

7) 9 V battery

Step 3: Solder All the Parts Together Just Like the Diagram

Step 4: And You're Done!


kotsuyoshi (author)2016-05-06

Hello, may i ask what to do to improve the sound quality of the amplifier? e.g. noise reduction, add bass...etc, also how to increase the output so that it can drive a bigger speaker? thanks


You can't increase the output... the lm386 can give at max 1W , reducing the noise the volume will decrease. About the bass i'm searching...

SamN2 (author)Georges Creations2016-05-09

you could feed the output into the base of a power transistor to get more power. The op amp would be the preamp then.


thanks a lot! :)

tomatoskins (author)2016-05-05

Nice circuit! Thanks for sharing and welcome to the community!


thanks ! I hope to have a good time in this nice community

About This Instructable




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