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64-bit unique identifier (UID)
It communicates with the Arduino using the I2C interface
Check whether the module uses active-high or active-low logic in your code
the input must not exceed 12 
MAX9744 Stereo Class-D Audio Amplifier 20W - Adafruit 1752 thumb 64-bit unique identifier (UID)Premium Stereo 20W Class D Amplifier MAX9744 The Adafruit Stereo 20W Class D Audio Amplifier (MAX9744) is a high quality stereo amplifier that outputs 220W with exceptionally low noise and distortion. Volume control via I2C makes it easy to integrate with microcontrollers. It's Adafruit's top pick for powered speaker builds that need clean, loud audio. Technical specifications Chip MAX9744 (Maxim) Output Power 220W (4) Channels 2 (stereo) Volume
