2Pcs LM386 10W Mini Power Amplifier Board Audio Amplifier Module DC 3-12V Volume Adjustable Control

Good little amplifier package, although I suspect the output wattage is a little inflated. Input Vcc is filtered with a 220 uF capacitor. Output is AC coupled with 220 uF. Gain as fixed at 200. If you want 20, remove chip capacitor between pins 1 and 8. I really like the power on LED indication. All powered circuits should have this feature. Good job!

I used one of these to power a small speaker attached to a home made signal tracing probe.

Gain is set to 200 by default. Removing capacitor between pins 1 and 8 gets it back to the default of 20. Power output is nowhere near 10W.

I have a very old AC Voltmeter that has an audio amplifier module connected to it. It is used for audio signal tracing and trouble shooting. The amplifier module stopped working and I replaced it with one of these. It is running from a 9-volt battery and has a small speaker connected to it. This piece of test equipment is used intermittently and this module is great for that application. Price is great!

The LM386N-1 of this amplifier is the low-voltage version of the LM386, recommended for 12 volt DC maximum power supply. At that voltage the rated output is ONE watt, and the distortion is horrible at 10%.It is a cute little amplifier but only capable of a few hundred milliwatts of clean audio.

While I prefer the asceticism of listening to a crystal radio with just an earpiece driven by the circuit, my hearing isn’t what it once was. This marvelous little amplifier is just the thing to drive a speaker using the crystal set’s output. Perfect in this application.

First of all, let me say that the LM386 won’t produce anywhere near 10 watts. Under the right circumstances, you’ll get about 700mw, before getting into bad distortion. This isn’t a complaint, but more to let people know what to expect, as opposed to the claimed 10 watts of output power.I finished restoring a 1923 one tube regenerative radio. I have headphones for it, but what fun is that? It’s hard to show off, when only one person can hear it, at once. I made a small speaker to match the cabinet of the radio, and placed this amp inside of it. It will run, nearly forever, on a 9V battery. (Also installed into the speaker cabinet.) It won’t shake the walls of your house, but it’s loud enough for a room full of people to hear it.These are just some good, all-around utility amplifiers. Whether you’re a professional, or a hobbyist, you’ll find many uses for these.

As a small audio amplifies these boards are fine however they are not 10 watt as advertised. I'm a electrical engineer and I looked up the amplifier chip being used. It has a maximum output of 0.7 watt