Function and connectivity Subwoofer output plus dedicated left and right channel outputs enable a twochannel speaker setup with strong bass performance and clear stereo imaging. AUX input and Bluetooth audio input provide flexible wired and wireless playback from most devices, delivering HiFi / definition sound quality. Wireless performance External antenna available to improve wireless reception and connectivity stability for Bluetooth devices. Safety and reliability Four protection mechanisms protect both the unit and connected equipment: antireverse connection, overheating protection, overcurrent protection, and short circuit protection. Key benefits at a glance Simplified integration: Easily connect to existing speakers or a subwoofer for enhanced audio without replacing your entire system. Flexible device compatibility: Works with Bluetoothenabled devices and wired sources via AUX. Improved reliability: Builtin protections reduce risk of damage from common electrical issues. Use scenarios Home audio setup: Connect a Bluetooth source such as a phone or tablet for wireless music playback, while using the subwoofer output and left/right outputs to drive your main speakers for fuller, richer sound. Small office or classroom: Use AUX or Bluetooth to play background music or presentations from a laptop or computer. The external antenna helps maintain a stable Bluetooth connection in environments with interference. Home theater or small venue: Pair with a TV or media player via AUX and route audio through the left/right channels for clear dialogue and dynamic music, while the subwoofer output provides deep bass to enhance movies or video content.