Feature: 1. The operation is extremely convenient without any instructions, more stable to work. 2. Multi‑functional set, in line with different working requirements to meet your demands. 3. Processed by sophisticated production, effectively prevent the board from wiring failure. 4. Supported audio decoding formats are MP3, MP3+V, WMA, WAV, MIDI, SP‑MIDI. 5. Manufactured by superior PCB board with stable performance and a longer service life. Specification: Item Type: Audio Module Material: PCB Power Supply Voltage: DC5V Application: MP3 player audio decoder VS1003 audio decoding format: mp3, mp3+v, wma, wav, midi, SP-MIDI Separate analog, digital, and IO power supplies Serial data and control interface (spi) 1 headphone and audio output interface Built-in phase-locked loop clock multiplier High quality stereo digital-to-analog converter (DAC) 16-bit adjustable analog-to-digital converter on chip (adc) 1 microphone for recording Recording encoding format: ima adpcm (mono) 1 line_in input interface Support mp3 and wav streams With power indicator Onboard 3.3V and 2.5V LDO 1117, the maximum current is 800mA Crystal Oscillator 12.288 MHz Capacitor filter. Package List: 1 x Audio Module