Adafruit Stereo 20W Class D Audio Amplifier - MAX9744
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 assembled 3 - 2-pin terminal blocks 1 - 3-pin terminal block 1 - 470uF power filter capacitor 1 - 1KΩ trim pot Length: 54mm / 2.1" Width: 41mm / 1.6" Height: 2mm / .08" Weight: 11g The terminal blocks included with your product may be blue or black. Some soldering required for terminal blocks & other components