Adafruit STEMMA Audio Amp - Mono 2.5W Class D - PAM8302

The Adafruit STEMMA Audio Amp is a compact yet robust mono amplifier, delivering up to 2.5 watts to 4-8 ohm speakers, thanks to its efficient class D controller. Designed for seamless integration, this amp operates within a voltage range of 2.0V-5.5VDC, making it ideal for portable and battery-powered projects without the hassle of overheating.

Experience exceptional efficiency with over 90% effectiveness in driving an 8Ω speaker at over half a watt. Enjoy precise audio control with a volume trim pot, adjusting from the default 24dB gain. Engineered for simplicity, it's a plug-and-play device with a JST-PH 3-pin connector input—no soldering required.

Output is direct to the speaker pins via a high frequency 250KHz PWM, ensuring a seamless audio experience without audible high frequencies. Although it lacks differential inputs, the amplifier ensures quality sound through its power/signal ground reference. Equipped with thermal and over-current protection, it maintains optimal performance under various conditions.

Comes with a fully assembled, tested breakout board, headers for breadboard integration, and 3.5mm screw-terminal blocks for easy speaker attachment. Note: terminal block color may vary. Perfect for users ready to explore enhanced audio capabilities, not suitable for connecting to secondary amplifiers.

Specifications include 2.5W output at 4Ω and 1.5W at 8Ω, 50dB PSRR at 1KHz, and a low current draw of 4mA quiescent with 0.5mA in shutdown mode. A versatile choice for auditory enhancement in any DIY setting.