Adafruit Stereo 20W Class D Audio Amplifier - MAX9744

Key Features: Both analog and digital volume control capability Up to 29.5dB max gain Integrated Click-and-Pop Suppression Drive 2 channels of 4-8 ohm impedance speakers at 20W each Fully assembled and tested Pump up the volume with this 20W stereo amplifier! This slim little board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Power it with 5-12VDC using the onboard DC power jack and plug stereo line level into the 3.5mm stereo headphone jack and jam out with ease. Since it's class D, its completely cool-running, no heat sinks are required and it's extremely efficient - up to 93% efficiency makes it great for portable or battery powered rigs. We took this lovely chip and wrapped it up into a breakout for you, with polarity-protection, jacks and terminal blocks, i2c level shifting, and a spot to solder in a volume pot.We like the MAX9744 amplifier at the heart of this board because its very easy to use, but it also has both analog and digital volume control capability. Use a single 1KΩ pot (we include one) to adjust volume analog-style. Or hook it up to your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.Item Specifics (without 0.1" header or terminal blocks)1 - MAX9744 breakout board with all surface-mount parts fully assembled3 - 2-pin terminal blocks1 - 3-pin terminal block1 - 470uF power filter capacitor1 - 1KΩ trim potLength: 54mm / 2.1"Width: 41mm / 1.6"Height: 2mm / .08"Weight: 11gThe terminal blocks included with your product may be blue or black.Some soldering required for terminal blocks & other components