This XH-M139 2.1 Channel Digital Power Amplifier Board is a high-efficiency Class D audio module that delivers a total of 200W output via a 2x50W stereo configuration and a 100W dedicated subwoofer channel. Utilizing dual high-performance TPA3116D2 core chips, this module provides rich bass and crisp highs, making it the perfect foundation for custom 2.1 home theater systems and active DIY multimedia speakers.