The Rugged Audio Shield is the most powerful and flexible audio playback, recording, and processing shield for the Arduino family. Includes 3.5mm jacks for stereo Line In and Headphone Out, mono Microphone In, microSD card socket with built-in FAT filesystem drivers, analog potentiometer, dedicated 32 MHz microcontroller (with hackable/upgradable firmware!) and stacking headers. Fully assembled and ready to work. Free Arduino GUI library and example code.