Description This MP3 module is a small and low cost MP3 module with an amplifier output directly to the speaker. Feature: 24 -bit DAC output, support for dynamic range 90dB , SNR support 85dB Fully supports FAT16 , FAT32 file system A variety of control modes, I/O control mode, serial mode, AD button control mode Advertising sound bites, sound effects Audio data sorted by folder, supports up to 255 folders, each folder can hold up to 1000 songs 30 level adjustable volume, 6 -level EQ adjustable.