The Pico-Audio is an audio expansion module designed for Raspberry Pi Pico, which incorporates CS4344 low power stereo decoder, and uses I2S bus for transmitting audio signal. It supports wide range audio sampling rate, allows headphone and speaker signal output at the same time. ^^Standard 3.5 mm audio jack, for connecting external headphone^^Dual channels speaker headers, for direct driving speakers^^8~384000Hz audio sampling rate^^5. Stereo sound effect output. Using 3-wire I2S, effectively reducing EMI