These are very good MP3 players. I have one running 24/7 feeding MP3 music from a usb stick. This is a stereo low level output so tie it to an amplifier. Mine feeds a FM transmitter so we can listen wherever there is an FM radio in the building. I 3D printed a case from Thingaverse. Found a 5.5mm jack and 1/8" jack for output. It pulls less than 100ma so most 9 to 12v transformers will work fine. Remote works well. This seller offering a great deal as well.