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XH-A156 is a mini 4-channel digital audio amplifier board built with PAM8403 chip. It operates with DC 5V power input and delivers 3W per channel stable power output, bringing pure stereo sound quality. The module features small size, low heat generation and low power consumption, equipped with a connecting cable for quick installation. Perfectly suitable for laptop desktop speakers, DIY audio production, home small sound systems and various audio amplification applications.