Connectivity and sound quality AUX and Bluetooth audio input provide flexible connectivity for a wide range of devices, delivering hiFi definition sound. Antenna and range External antenna option available to improve wireless reception and stability. Output configuration Subwoofer output plus left and right channel outputs enable a full stereo setup with enhanced bass. Protection and reliability Four protection mechanisms: antireverse connection, overheating protection, overcurrent protection, and short circuit protection to safeguard connected equipment. Use scenarios Home entertainment setup: pair a Bluetooth or AUX source from a TV, smartphone, or music player to drive a subwoofer and stereo speakers for rich, immersive sound. Small venues or office spaces: use Bluetooth or AUX inputs to power a compact speaker system with defined bass and clear left/right channels for presentations or background music. Automotive or mobile installations: integrate into a vehicle audio system to improve reception and provide dedicated subwoofer and stereo outputs with builtin safety protections.