Sure Electronics AA-JA33285 Audio Amplifier Board

The AA-JA33285 from Sure Electronics is a compact and powerful four-channel Class D audio amplifier board, designed to deliver clear, efficient sound for a wide range of audio projects. With a nominal output of 4 x 30 watts into 8 ohms, this booster module is ideal for multi-room audio systems, custom speaker builds, portable PA setups, or upgrading existing installations where space is at a premium. Its integrated Bluetooth 5 connectivity allows for seamless wireless streaming from smartphones, tablets, or computers, making it a versatile choice for both DIY enthusiasts and professional integrators.

At the heart of the board lies an Analog Devices ADAU1701 DSP, offering flexible signal processing capabilities such as equalisation, crossover filtering, and dynamic range control. The amplifier achieves an impressive signal-to-noise ratio of 97 dB (A-weighted) and an efficiency of 87%, ensuring low distortion and minimal heat generation. With a minimum load of 4 ohms, a gain of 26 dB, and an input sensitivity of 770 mV, it integrates easily with a variety of source components. Measuring just 91.44 x 68.58 mm, this board packs substantial audio performance into a footprint that suits even the most compact enclosures, providing a reliable foundation for high-quality, multi-channel audio reproduction.