The SPMD series is specifically designed to drive PRODIO speaker systems. As a high-efficiency audio power amplifier with a built-in DSP audio processor, it serves as the core of the PRODIO system, providing comprehensive drive management for PRODIO speakers. With a lightweight 1U design, it weighs only 4 kg. The power module adopts a passive power factor correction scheme and operates within an AC voltage range of 90–264 V, delivering a power drive capacity of 2–4 kW, which supports a peak audio power output of 8–16 kW for the entire unit. The audio amplification section employs a dynamic pulse density modulation mode, achieving an overall conversion efficiency of approximately 80%. The built-in DSP in the SPMD series audio power amplifier can load the latest designed correction parameters for PRODIO speakers.