Sure Electronics AA-AB33182 | Amplifier Module

The AA-AB33182 from Sure Electronics is a highly capable Class D audio amplifier board designed to deliver robust, efficient power in a compact form factor. As a booster module, it provides an excellent solution for upgrading existing systems or building custom audio setups from scratch, offering four channels of amplification in a single, streamlined unit.

This board is ideally suited for multi-room audio installations, where independent speaker zones require consistent, high-quality sound. It also excels in custom sound systems for home theatres, commercial spaces, or DIY audio projects, allowing you to drive four speakers simultaneously without compromising on performance. Whether you are creating a distributed audio network or a powerful multi-channel amplifier, this module offers the flexibility and output needed.

At its core, the amplifier utilises an STMicroelectronics STA508 circuit topology, achieving an impressive 92% efficiency. It delivers a nominal 4x100W into 4-ohm loads, with a signal-to-noise ratio of 90 dB (A-weighted) for clean, detailed audio reproduction. The board features a 32 dB gain and accepts input via RCA or PCB solder connections, while speaker outputs are handled through secure screw terminals. Its compact dimensions (152.4 x 114.3 x 33 mm) make it easy to integrate into enclosures, with a mounting hole diameter of 3.8 mm for straightforward installation.

This amplifier board is a practical, high-performance choice for anyone seeking reliable multi-channel amplification in a space-saving design.