Adafruit Audio FX Sound Board - WAV/OGG Trigger with 16MB Flash No Arduino or other microcontroller required! Completely stand-alone, just needs a 3 to 5.5VDC battery Small - only 1.9" x 0.85" Built in Mass Storage USB with 16 MB storage- Plug any micro USB cable into the Sound Board and your Windows computer, you can drag and drop your files right on as if it were a USB key High Quality Sound - You want 44.1KHz 16 bit stereo? Not a problem! The decoding hardware can handle any bit/sample rate and mono or stereo Header pins require soldering