Sure Electronics AA-AB41136 | BT 4.0 | Receiver Board

The AA-AB41136 Bluetooth 5.0 Audio Receiver and 2x3W Amplifier Module from Sure Electronics offers a compact and efficient solution for upgrading passive speakers to wireless streaming. This versatile booster module is ideal for DIY audio projects, custom speaker builds, or retrofitting older sound systems with modern Bluetooth connectivity, allowing you to enjoy high-quality audio from your smartphone, tablet, or computer without the clutter of cables.

At its core, the module features Bluetooth 5.0 technology for stable, low-latency wireless transmission, paired with a Class D amplifier that delivers 2x3W of nominal power into a 4-ohm minimum load. Despite its modest output, the amplifier achieves a total harmonic distortion of just 0.5%, ensuring clear and accurate sound reproduction. The module operates with a maximum input sensitivity of 0.9 Vrms and includes a current limit of 0.7A for reliable performance. Its compact dimensions—76.2 mm by 50.8 mm—make it easy to integrate into tight enclosures, while the jack-type power connector simplifies installation. Whether you are building a portable speaker, upgrading a bookshelf system, or adding wireless audio to a workshop setup, this module provides a straightforward and effective upgrade path.