Features: Single-to-Dual-channel Design, Meeting Diverse Needs: Although this power amplifier board initially features a single-channel design, by purchasing two boards, you can effortlessly convert it into a dual-channel configuration, making it ideally suited for home theaters, stage sound systems, and other applications demanding stereo effects, thereby enriching your auditory experience with additional layers and depth." High-performance Audio Pairs, Ensuring Excellent Sound Quality: It adopts the A970/C2240 high-voltage audio pair dual differential circuit, along with A1145/C2705 for voltage amplification, using mid-power pair A1837/C4793 as the driver, and the output stage employs A1943/C5200 high-power for Toshiba pairs. This combination of high-performance audio pairs ensures pure and delicate sound quality, making every listening session a delight. Wide Power Supply Range, High Adaptability: The power amplifier board supports a wide power supply range of DC plus or minus 20-90V, meaning no matter your power environment, you can find a suitable power solution. Additionally, the upgraded circuit and component optimization allow it to operate stably even at high voltages, but it is recommended not to exceed 90V to ensure device safety. Powerful Driving Force, Effortlessly Handling Large Speakers: With its outstanding circuit design and high-performance audio pairs, this power amplifier board boasts a powerful driving force, capable of effortlessly driving large speakers such as 15-inch ones. Whether for home theaters or commercial performances, it delivers a stunning audio experience. High Power Output, Balancing Sound Quality and Strength: The power amplifier board can provide 200W of power output without distortion, with a maximum power of up to 300W. Such high power output ensures that when playing music or movies, it can present a fuller, more powerful sound effect while maintaining clear and delicate sound quality. Specifications: Material: PCB Size: 120 x 60 x 45MM Color: Black Channel: Single Power supply: DC plus or minus 20-90V Undistorted power: 200W Maximum power: 300W Quantity: 1pcs Package Included: 1 x Amplifier Board