DollaTek Mp3 Lossless Decoders Decoding Power Amplifier Mp3 Player Audio Module Mp3 Decoder Board support TF Card USB

Great little module. Put a SD card in and it just plays on power up. The quality seems good. You cant easily select a file though, its use is for something like music on hold or for sound effects. As an engineer I would also warn the output is not filtered very well. IE along with the audio theres a load of high frequent digital noise, you cant hear it but it might affect some amplifiers.

Fabulous little device. I connected it up and popped in a micro SD card, and off it went. Mysteriously the volume controls seem to be reversed on mine, but they work well. Really pleased with it 😃

When wired up and power is applied it comes straight on and plays, I’m not saying it can’t be done but you can’t play say a track list and choose your audio order to come on when u drag the files on usb it seems to play random and when power is disconnected and connected again it plays the beginning of the last song that was played, not really for playing song quality isn’t that great as there is no way to dial up and down bass treble etc(amp) req, but for what I needed it for is great, just missing holes to screw it down

Very cheap, delivered by prime in 10 hours. Basic features plays from usb stick on power up with no programming. Just stick a Fat32 usb stick in and power up to play mp3 automatically. Ideal for props etc. Only slightly annoying thing is it it doesn’t remember the volume setting after power up. I want it loud so had to modify to do this

I have used this to make ambient sound box for my model railway and it works well. The mp3 players sound level is fixed approx midway, which was not a problem for me as I wanted background sounds only, though I still wired in a 10K AUDIO Potentiometer to reduce the sound level further.However if you did want it louder then you would have to extend the two volume momentary switches to the front of you panel using some suitable panel mount switches (soldering required). They use micro SD cards and the units start up as soon as they get power.I have linked 4 together with 4 speakers and they all start at the same time (so you could have sound travelling around the layout if required) separated with on/off switches .Neat little MP3 unit with output for speakers (mono) and headphones. So just add power: 5v, micro sd: 4GB (I put in 8GB but was only using approx 2.5mb mp3 for approx 18mins of sound) and speakers: 4w and your away. Update: When switched off the sound level seems to revert down to the lowest setting so I have installed a mini pre-amp board to the output of each off the mp3 players, which seems to have solved the problem of the low volume, which can't be increased when installed in an enclosed case.