Two input methods Bluetooth 5.0 and 3.5 mm AUX inputs provide flexible connection options. Bluetooth 5.0 delivers higher transmission efficiency with an unobstructed range of up to 49 feet. Treble and bass adjustment 2.1 channel configuration with a maximum output power of 2X50W100W. Adjust the and low frequency knobs to craft a more layered sound and punchier bass. Protection features Short circuit protection, overcurrent protection, overheating protection, and antireverse connection protection. In the event of an overload, the device reports the fault condition to the processor to prevent damage. construction Copper DC connectors and barrier style terminals support large currents without overheating or wire damage. Includes a DC head lead compatible with the input power interface of this product. Use scenarios Home stereo setup: use Bluetooth or AUX to connect a phone, tablet, or media player and adjust treble and bass to suit your room and speakers. DIY audio projects or small speaker systems: integrate as the main amplifier for a 2.1 channel configuration, using the included DC head lead for power connection. Portable events or small gatherings: stream audio via Bluetooth from a compatible device while retaining a wired AUX backup option, with builtin protections ensuring safe operation.