The DP-A12-45 is a high-performance 2-channel Class D amplifier board featuring integrated DSP control and robust power delivery. Designed for seamless integration into active speakers and professional audio systems, this board combines exceptional power efficiency, precise digital signal processing, and reliable performance in a compact and installer-friendly form factor. when the speaker install the active board ,it can use for touring and live sound reinforcement systems,Fixed installation and commercial audio applications.