Sure Electronics AA-AB32191 | Amplifier Module

The AA-AB32191 from Sure Electronics is a high-performance Class-D amplifier board designed to deliver robust, clean power for demanding audio applications. As a booster module, it provides an efficient and compact solution for upgrading existing sound systems or building custom setups from scratch.

This amplifier board is ideal for powering passive speakers in home theatre systems, active studio monitors, or portable PA rigs where space and thermal management are critical. Its high efficiency of 86% ensures minimal heat generation, making it suitable for enclosed cabinets or continuous high-power operation. The board can drive two channels with a nominal output of 2 × 300 watts at 4 ohms, easily handling low-impedance loads down to 3.5 ohms.

At its core, the board utilises the Texas Instruments TAS5630B integrated circuit, a proven topology for reliable, low-distortion amplification. It offers a signal-to-noise ratio of 99 dB, ensuring clear audio reproduction with minimal background hiss. Input is via RCA connectors, while output connections use secure screw terminals. The amplifier gain is fixed at 24 dB, and a current limit of 13.9 A provides protection against overloading. With dimensions of 152.4 x 114.3 x 30.48 mm, this module is a powerful yet space-efficient choice for any serious audio project.