2X 350W Mono Subwoofer Amplifier Board — High-Power DIY Speaker

Includes power cord and speaker cable. Ideal for pairing with a 10-12 inch 250W-300W subwoofer speaker. This 350W subwoofer power amplifier board employs a disassembled tube design and achieves a very high signal-to-noise ratio; when the input line is not connected, no noise can be heard. Built-in full relay protection covers several fault conditions, including power-on delay, DC output protection, horn short circuit protection, etc.