Flexible Subwoofer Expansion: Includes a subwoofer expansion port compatible with 1602 and 3002 installations, providing flexible bass extension and enhanced lowend performance. Whether you are setting up a home theater or a custom sound system, this feature delivers deep, rich bass for an immersive listening experience. Multiple Expansion Ports: The digital amplifier board offers multiple expansion ports for easy connections to a microphone preamp, reverb input, or output. This design supports a range of applications from karaoke setups to professional audio systems. Reliable Safety Features: Equipped with undervoltage protection, reverse polarity guard, overheat protection, overcurrent protection, and short circuit protection. This amplifier module is designed for reliable and safe operation, offering durability and performance for long term use. Powerful Sound Performance: The power digital amplifier board delivers outstanding sound quality with current capability and a low magnetic loss design. Featuring OFC wire for enhanced sound fidelity and reduced electromagnetic interference, this board provides crystal clear audio for your home theater or sound system. Use scenarios Home theater: Extend bass with the subwoofer expansion port to achieve deep, cinematic sound while maintaining clean, precise overall audio performance. Karaoke or small live setups: Use the multiple expansion ports to connect a microphone preamp and reverb, enabling clear vocal output and ambient effects for entertaining performances. Custom sound systems: Integrates into an audio arrangement for professional or enthusiast installations, delivering reliable protection features and fidelity sound across a range of configurations.