- Construction and protection: This Bluetooth amplifier board has a base plate and a top plate and provides protection for reverse polarity, over-voltage, low voltage, overheating, and short circuits to ensure safe operation and long service life. - Easy operation: Equipped with a volume control and a power switch, making it simple to adjust output and power on/off. Ideal for DIY passive speakers and home audio systems. - Robust connections: Uses copper DC connectors and fence clamps to carry large current with minimal heat and to prevent damage to wires. - Cooling and performance: Features a large area heat dissipation system and a high quality power module, enabling long-term high performance without overheating or shutdown. - Use scenarios: - Build or upgrade a DIY passive speaker system in a living room, studio, or office. - Integrate into a compact home audio setup or small home theater to drive passive speakers. - Use in Bluetooth-enabled audio projects that require a reliable amplifier stage.