HiLetgo TF Card U Disk Play MP3 Decoder Player Module with Audio Amplifier Audio Decoding Player Module Micro USB 5V Power Supply

The product was used for a sound system in a model steam boat Unit works perfectly

The MP3 player is easy to hook up and works well. It plays MP3s from a micro SD card or a USB drive or both. I found that it will automatically play whichever is plugged in. Or it will switch to the new one when one is plugged in. With the forward and back buttons I could step through the tracks from the SD card to the USB drive and back. I assume if I let it play it would play tracks across both from SD cart to USB although I haven't let it run that long. It also rememberd where I was when I powered it off and started back where I was when powered back on. I got sufficient volume from the speaker connection for anything I would want it for. The volume on the headphone jack was much lower. The headphone jack will work for headphones but won't drive a speaker without external amplification. At high volume there is some noticeable white noise. The only drawback I found is that it is mono not stereo. It has volume buttons (long press) and previous and next track buttons (short press). It doesn't have skip forward and back buttons which I find a requirement for listening to audio books or podcasts. It has a repeat track mode button and play/pause. Long pressing play/pause is supposed to switch back and forth between the SD card and USB drive but that didn't work.

Used this with a small 3 Ohm speaker to add sound to our gas fireplace. Have it connected to turn on and off with the fireplace. Adds another layer of authenticity to an already excellent gas fireplace. Amazed they don't come with sound as an option.

This decoder/player worked great for my project; a background noise generator. I recorded an air conditioner running and converted it to an MP3 file. Saved it to a micro SD card and plugged it into the player. Now when it's powered up, it plays the file. Easy. The board uses a GDP2856A chip for the decoding. Search Google for GDP2856A and you'll see that it has additional features (Repeat, Equalizer, Stereo output) that you can use if you have some electronics knowledge. You can interface it with an Arduino or other microcontroller too. Great value for the price. Paired with an appropriate speaker, (4 Ohm, high efficiency) the 2 watt output is more than enough to get the job done. See video- background noise, volume up, song playing.

This unit sounds espcially good when used with stereo headphones. I connected a cellphone speaker modul to the mono amp output which also sounds fine.