Yeeco Lossless Mp3 Decoders Board Power Amplifier Mp3 Player Audio Module Support TF Card USB With high quality, onboard 2W single channel power amplifier Convenient to wire and refit; 4 buttons on the board for setting operation Support MP3 format, playing power on automatically, LED indocator light when module is working Mp3 lossless decoders power amplifier Mp3 player module Mp3 decoder board support TF card and USB Support TF Card (mobile phone memory card), U disk playback mode With the speaker terminals without welding