Arduino sound buzzer and mp3 shields arduino e000001 this arduino shield is a kit that is a simple and effective way of adding quality audio to an electronic project the kit can play up to 22khz 12 bit uncompressed audio files of any length and is easy to make with all necessary parts supplied an onboard dac filter and op amp provide the high quality output audio files are read off a sdmmc card and volume can be controlled via an onboard thumbwheel potentiometer the kit is easy to c