Adafruit Audio FX Sound Board + 2x2W Amplifier - WAV/OGG Trigger - 16MBThe Adafruit Audio FX Sound Board with 2x2W stereo class D amplifier is the easiest way to add audio and sound effects to your projects without requiring any microcontroller or programming. It features 16MB of onboard storage and supports WAV or OGG files, with up to 11 trigger inputs for buttons or switches. Key Features: No Arduino or microcontroller required completely stand alone, just needs 3 to 5. 5V DC power Compact size (23mm x 51mm x 3mm)