Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302

Key Features: Delivers up to 2.5 Watts into 4-8 ohm impedance speakers Very efficient Class-D controller amp Built in thermal and over-current protection Fixed 24dB gain, onboard trim potentiometer for adjusting input volume. Output is "Bridge Tied" meaning the output pins connect directly to the speaker pins, no connection to ground This super small mono amplifier is surprisingly powerful it delivers up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8Ω speaker at over half a Watt) - making it perfect for portable and battery-powered projects. There's even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain. This board is a welcome upgrade to basic "LM386" amps!The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have diffe