Dynamic voltage range for enhanced power The Power Amplifier Module is designed to operate with a recommended input voltage of 18V to 24V, enabling higher output power and improved performance. Advanced connectivity for flexible listening The Dual Channel Module includes Bluetooth 5.0 for seamless wireless streaming and an AUX input for wired playback, giving you versatile listening options. bass control to fit your room The builtin BASS potentiometer lets you adjust bass levels; turn right to boost bass or left to attenuate, allowing you to tailor the sound to your preference. Reliable protection for worry operation This Subwoofer Sound Amplifier Board includes a comprehensive protection mechanism against overvoltage, undervoltage, overheating, and short circuits, ensuring safe and dependable performance. Use scenarios and applications Home theater or stereo system upgrade: Add a powered subwoofer with wireless Bluetooth streaming and adjustable bass for a richer low end and convenient control. DIY audio projects: Ideal for subwoofer or powered speaker builds that require reliable protection, flexible input options. Small venues or studio setups: Suitable for compact powered subs or monitors that benefit from Bluetooth streaming, wired AUX input, and robust protection features for consistent performance. Compatibility and performance at a glance Function: Subwoofer sound amplification with wireless and wired input options and user tunable bass. Connectivity: Bluetooth 5.0 and AUX input. Protection: Overvoltage, undervoltage, overheating, and short circuit safeguards. Application range: DIY subwoofer projects, home audio upgrades, compact powered speaker configurations.