Item Type: MP3 Decoder Module <br>SPI Interface: Control signal lines are all led out. <br>Output Interface: 1 headphone and audio output interface. <br>Microphone: 1 microphone for recording. <br>Input Interface: 1 line_in input interface. <br>Power Indicator Light: Yes <br>Current: Onboard 3.3V and 2.5V LDO 1117, providing 800mA current. <br>Single Power Supply: +5VDC, capacitor filter. <br>Crystal Oscillator: 12.288 Mhz crystal oscillator. <br>Printed Circuit Board Size: Approx. 50 x 40.5mm / 2 x 1.6in<br>1、The MP3 decoder module supports decoding many audio format, including MP3, MP3+V, WMA, WAV, MIDI, SP-MIDI. <br>2、The recording encoding format is IMA ADPCM (mono), and supports microphone and line input two input methods. <br>3、Supports MP3 and WAV streams, has internal phase-locked loop clock multiplier as well as low power consumption. <br>4、Equipped with stereo digital?to?analog converter (DAC), 16?bit adjustable on?chip analog?to?digital converter (ADC). <br>5、Has stereo earplug driver (30 ohms), separate analog, digital and IO power supplies, and serial data and control interface (SPI).1 x&nbsp;MP3 Decoder Module