AA-AB32166 Amplifier module

The Sure Electronics AA-AB32166 is a compact Class D stereo amplifier board delivering 2 × 25W into 8-ohm loads. Based on the TDA7492P chipset, this efficient board is ideal for DIY audio builds, portable sound systems, and embedded applications where space-saving and thermal control are critical.

Highlights of the Sure Electronics AA-AB32166

• Delivers 25W per channel into 8-ohm speakers at 24V DC (THD+N 10%)
• High efficiency up to 88.7%, with low idle and standby power consumption
• Built-in overcurrent and overtemperature protection ensure reliable performance
• Ultra-compact 3.6″ × 2.7″ form factor with 4-point mounting and integrated heat dissipation

Product details Sure Electronics AA-AB32166

Sure Electronics AA-AB32166 Class D Stereo Amplifier Board

The AA-AB32166 from Sure Electronics is a high-efficiency Class D amplifier module capable of delivering up to 2 × 25W into 8-ohm loads using a 24V DC power supply. Utilizing the TDA7492P chipset, this module is optimized for low power consumption with an idle power of just 0.6W and a standby mode drawing as little as 0.1W. It features a gain of 27 dB and input sensitivity of 625 mV RMS, making it compatible with a wide range of source devices. Designed with integrated overcurrent and overtemperature protections, it ensures long-term reliability in audio systems. A 350 kHz switching frequency and wide bandwidth of 20 Hz to 20 kHz allow full-range sound reproduction with minimal distortion (THD as low as 0.0365% at 1W). The board includes RCA and terminal block inputs, onboard power and mute connectors, and speaker output blocks. Perfect for compact stereo speaker projects, background music systems, or embedded audio applications requiring clean output and energy-efficient operation.

Specifications