200 Times Gain LM386 Audio Amplifier Amplitude Module Board with Adjustable Resistance Control Potentiometer for Arduino Raspberry Pi or Musical Projects(Pack of 5)

Audio sounds very good. I wouldn't use it for a stereo system, but for alarm or casual use an MP3 sounds at least as good as coming from a tiny phone speaker. The potentiometer is 10 k and has way too high a value - the reason for dropping a star in ratings. Only the tiniest movement will make the audio go from quiet to blaring. I changed it out for a 2 k pot, giving a lot more range for the setting. Probably a 1 k would be even better. For a Pi, plug it into the earphone port and use Omxplayer for the driver.

First one was bad, choppy output, very low output; second one worked but had two bad solder spots; trying the third one to see on it it will work.Added a picture of the next two I was going to use; one clearly has been reworked and still bad solder joints; both have poor solder joints. Look close enough and you can see solder wiped across the runs from the left hand terminal.

Have some old computer speakers (cheap) that we use for timing our RC sailboat Races (mp3 player with the count down. made my own amp with lm386 works well but the chip keeps over heating and then dies. This little amp works very well can now turn down the volume on the player so as not to over drive the speaker. will purchase once more if I use up the five that I have.

Out performed the 18watt option on volume.

Does not work with a mic as stated. All I get is a high pitch sound from it

Great product