Sure Electronics AA-AB32281 | Amplifier Board

The AA-AB32281 2x200W Class D Audio Amplifier Board from Sure Electronics is a compact yet powerful solution for driving high-quality sound in space-constrained applications. This T-Amp module is designed to deliver robust performance with minimal heat generation, making it an ideal choice for DIY audio enthusiasts, custom speaker builds, or upgrading portable sound systems. Whether you are constructing a home cinema setup, a multi-room audio installation, or a professional-grade active speaker, this board provides the reliability and efficiency needed for demanding audio projects.

At the heart of this amplifier is a Class D topology with a T-AMP circuit design, achieving an impressive 91% efficiency and a signal-to-noise ratio of 94 dB for clean, low-noise output. It delivers a nominal 2 × 200 watts into a 3 Ω load, with a remarkably low total harmonic distortion of just 0.004% at 1 watt and 1 kHz. The board features a 26 dB gain and an input sensitivity of 740 mV, accepting signals via a combination of screw terminal blocks and RCA connectors. Speaker outputs are via robust terminal blocks, while power is supplied through a jack connector with a current limit of 12.6 A. Measuring only 91.44 mm by 68.85 mm, this amplifier board is a compact powerhouse that fits neatly into any custom enclosure.