Features 1、[OPTIMIZED CIRCUIT] With optimized circuit design, integrated switch mute, has high overall noise ratio. 2、[SPEAKER PROTECTION] With speaker protection circuit, over temperature and overload protection, with safe operation. 3、[WIDE VOLTAGE RANGE] The working voltage is DC ±20‑90V, no need to worry about voltage instability affecting the sound quality. 4、[STRONG DRIVE FORCE] The power amplifier module has good sound quality and strong driving force, with a wide range of applications. 5、[EASY INSTALLATION] Made of excellent PCB, stable and reliable in performance, and installation does not take up space. Specification Item Type: Power Amplifier Board Product Material: PCB Power: 300W without distortion Peak Power: 450W Package List 1 x Power Amplifier Board