🔋 Battery Power Supply Audio Mono Amplifier Module Board NJM386D LM386 Review

A simple circuit with three pairs of wires to connect. No soldering and none of the dozen or so I've ordered have ever given me any trouble.

Not working. I've tried different settings and can't get the volume control to work. Any microphone plugged into it will get exactly the same gain as it would without this amp. No matter when it's on. Good only as a switch, nothing else.

The simple 1-chip amp works as expected and saved me the hassle of assembling. I also like that there is an on/off switch. It also has a jumper selectable gain. It comes with 20x amplification, but as far as I remember there can also be 200x amplification. See the chip data sheet for details.

A simple circuit with only 3 pairs of wires. No soldering and none of the dozen or so I've ordered have ever given me any trouble.

Doesn't work. I've tried different settings and can't get the volume control to work. Any microphone plugged into it will get exactly the same gain as it would without this amp. No matter when it's on. Good only as a switch, nothing else.

A simple one chip amp works as expected and saved me the hassle of reassembling. I also like that there is an on/off switch. It also has a jumper selectable gain. It comes with 20x amplification, but as far as I remember there can also be 200x amplification. See the chip data sheet for details.

This is my second project with one of these audio amplifiers. I developed it as a DSP filter for my amateur radio. The build quality is top notch and the choice of x20 or x200 amp gain is a real plus. The audio output is crisp and clear. These amps are better than I could ever build, especially at this price point. I hope Revain will continue to offer these amps.