power Bluetooth digital power amplifier board with 2.1channel, fidelity sound Key benefits Delivers strong, clean power for 2.1 channel audio with a dedicated subwoofer channel Built with the latest materials for reliability and performance Bluetooth enabled for wireless streaming and convenient playback Flexible power input from 18 to 50 V DC (up to 53 V limit) supports various installation scenarios Clear relationship between voltage, impedance and output power for scalable performance Specifications and performance Working voltage range: 1850 V DC, limit 53 V Recommended DC power supply: 3648 V with a current capability of 12 A or higher Channel power (left or right channel): 300 W at 50 V into 4 Ω; 160 W at 50 V into 8 Ω Subwoofer power (maximum): 600 W at 50 V into 2 Ω; 300 W at 50 V into 4 Ω; 160 W at 50 V into 8 Ω Design: 2.1channel fidelity amplifier with separate subwoofer capability Output characteristic: the higher the voltage and the lower the impedance, the greater the output power What makes it stand out 2.1channel configuration combines stereo performance with a powerful subwoofer output for fuller sound Uses latest materials to enhance durability and audio fidelity Bluetooth integrated for convenient wireless audio streaming Wide input voltage range enables flexible installation and power options Clearly specified perchannel and subwoofer outputs for predictable system design Materials and construction Built with the latest materials to optimize performance and reliability Designed for power applications while maintaining audio clarity Size and compatibility Size and physical dimensions are not specified in the provided information Compatible with DC power supplies in the 3648 V range, with a recommended capability of 12 A or higher Suitable for fixed installations and DIY projects that require a power Bluetooth 2.1 amplifier with subwoofer support 23 practical use scenarios Scenario 1: DIY power Bluetooth home theater system Use this amplifier board to drive a left and right speaker pair plus a dedicated subwoofer for a compact home theater setup Bluetooth streaming provides easy source connectivity, while the subwoofer channel adds deep bass for movies and music Scenario 2: Custom fidelity powered speakers for small venues Build a compact PA or stage monitor system with strong perchannel output and a sub for enhanced bass, suitable for small events or broadcasts Scenario 3: Bluetoothenabled multimedia speaker with sub Create a standalone wireless speaker system with immersive bass by pairing compact bookshelf or floorstanding speakers with a dedicated subwoofer Notes Ensure the power supply matches the recommended 3648 V DC range and supports at least 12 A Observe the relationship between voltage and impedance to achieve desired output power No additional specifications or dimensions are provided beyond what is listed above; use within the stated voltage and impedance ranges for results