Sure Electronics AA-AB32165 | Amplifier Module

The Sure Electronics AA-AB32165 is a compact and highly efficient Class-D audio amplifier board, designed to deliver robust stereo sound in a variety of applications. Whether you are building a custom speaker system, upgrading a portable audio rig, or integrating amplification into a DIY project, this module provides a reliable and space-saving solution. Its low-profile footprint makes it ideal for installations where traditional amplifiers would be too bulky, such as in desktop speakers, multimedia setups, or small-scale public address systems.

At the heart of this board lies the STMicroelectronics TDA7492 chip, a proven Class-D topology that achieves an impressive 87% efficiency while minimising heat generation. The amplifier delivers a nominal output of 2 × 25 watts into 6 ohms, with a minimum load of 4 ohms, and offers selectable gain settings ranging from 20.6 dB to 34.6 dB to suit different input sources. A signal-to-noise ratio of 91 dB ensures clean, clear audio reproduction with minimal background hiss. Input connectivity is provided via RCA or PCB solder pads, offering flexibility for both pre-assembled and custom wiring. With dimensions of just 122 × 91 × 24 mm and a mounting hole diameter of 3.8 mm, this board is straightforward to install in enclosures or chassis. For those seeking a compact, high-fidelity upgrade to their audio system, the AA-AB32165 delivers impressive performance in a small package.