DROK 5W+5W Mini Audio Amplifier Board PAM8406 DC 5V Digital Stereo Power Amp 2.0 Dual Channel Class D Amplify Module for Speaker Sound System DIY

This little guy is just what you'd expect: an inexpensive device that does exactly what it is promised to do, and does it well. I've used two of these devices in two different applications, and in both cases it worked simply and perfectly. It's so good that there's not much to say other than to say that it's good.

I had a pair of powered 5w PC speakers whose internal amp had developed a bad, sporadic buzz. (A known issue for these now discontinued speakers). They were used for a homemade Bluetooth alarm clock/music player. I pulled the old amp and dropped this in, using a USB test lead and phone charger for power. It fit neatly inside the speaker.With *proper shielding* this is a quiet, efficient, and good sounding amp. Speakers sound better than they did before.The thing with any amp (but particularly this type) is that you need proper shielding or it will pick up EMI and 60-cycle hum. I simply lined the speaker enclosure housing with foil tape and added ferrite clamps to the wires going in and out of it. Sorted.With this proper (if low-tech) shielding, I have to max out the volume to get a barely noticeable hiss.We shall see how it holds up over time, but at present I am very pleased with the results.

I’ve bought several of these tiny class D amps for tinkering and faffing purposes, starting with the pam8610, which also has quite a nice sound to it, but the lower power 8406 contained in this board has really made made quite an impression. I wanted something to drive really sensitive open baffle speakers, and being terminally short of cash a tube amp was out of the question. With this wee feller, my zenith cz49s come alive and fill my world with beautiful music.The documentation says that this is capable of being used as a class AB amp, but doesn’t say how. The 5v rating is good because you can plug it into a usb cube phone charger and not have to worry about a power brick. I will try it out with more demanding speakers, but for now this is superb!

Nice little amp. Does exactly what it promises. It would be nice to have a detachable pot for easier installation.There is no startup delay circuit, so when I turn it on with the pot there is a huge static boom which is a bit scary.Overall it is a solid component for any and all DIY project that needs to boost the audio out to drive a pair of speakers.

Very good product very good volume control

The 5w version of this amplifier is... a bit weird honestly. It only accepts 5vin but is quite power hungry, and because of how power calculations work, you need a lot of amps to keep it from dragging the 5v rail down. USB power supplies are generally not going to have this kind of grunt.Worse, when it DOES drop out, instead of just going quiet it instead screeches like a banshee for several seconds until the rail recovers. I was using this in an alarm clock project and, well, I guess it nothing else it worked well for that...Ultimately I strongly recommend grabbing the 15w big brother and feeding it a higher voltage. USB PD can easily deliver 20v with enough amps to keep that one well inside its happy zone.

The first one I received did not work. Requested a replacement and it was shipped right away. The replacement did not seem to work but it turned out to be the 1/8" input jack. Low quality jack. Consider the overall price and you get what you get. No big deal. Corrected that and it works well. This was not the problem with the first one. If you're looking for a cheep little no frills make music 5VDC amplifier, this is it.

Works great powered off a USB. Very low profile, love the lack of required soldering for speakers and power. If running off a battery bank, it doesn't seem to draw *enough* power to keep some of mine on on its own, but if anything, that's a testament to its efficiency.

Todo bien buen sonido dentro de lo que cabe. No es sonido pro pero esta bien

Great little amp that can run on Raspberry pi projects. I made a power supply out of a USB cord for use in an Rpi. Works perfectly. Sounds great - clear and loud.

It sounds really nice and hides the frequency generated from the supplied power really will! the output of the speaker is independent of the power source which means that neither audio source nor power source need to be grounded with the same wire. would definitely recommend it!

Lo usé para un proyecto escolar con arduino y funcionó a la perfección

I'm using this with a Raspberry Pi 4. It worked perfectly, and really amplified the input signal, as long as the input was strong enough.There are extra features I didn't realize it had, like switching amplifier type. I didn't use these, but I appreciate it an option.